Answer:
A = S
B = U
C = S
D = S
Explanation:
Among the given compounds, compounds (A), (C) & (D) are saturated hydrocarbons and compound (B) is an unsaturated hydrocarbon.
What is hydrocarbons?Hydrocarbons are those compounds in which carbon atom is present in addition to the hydrogen atoms.
Saturated compounds are those compounds in which only single bonds are present between two carbon atoms.Unsaturated compounds are those compounds in which double or triple bonds are present between two carbon atoms.So, according to the data given in the question it is clear that compound (A), (C) and (D) are saturated compounds as in these only single bonds are present and compound (B) is an unsaturated compound because of the presence of the double bonds.
Hence only compound (B) is an unsaturated compound.
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A sample of xenon gas at 306 K and 0. 847 atm occupies a volume of 2. 96 L. If the pressure of the gas is decreased, while at the same time it is heated to a higher temperature, the final gas volume O will be smaller than 2. 96 L. O will be larger than 2. 96 L. O could be larger or smaller than 2. 96 L depending on the final pressure and temperature
The final gas volume, O, could be either larger or smaller than 2.96 L, depending on the final pressure and temperature. While heating the gas to a higher temperature, O could be larger than 2.96 L, but it could also be smaller.
The final gas volume, O, could be either larger or smaller than 2.96 L, depending on the final pressure and temperature. To understand why, we can look at the ideal gas law equation, PV = nRT. In this equation, P represents pressure, V represents volume, n represents the number of moles of gas, R is the gas constant, and T represents temperature.
Let's analyze the situation given in the question. We have a sample of xenon gas at a temperature of 306 K and a pressure of 0.847 atm, occupying a volume of 2.96 L. Now, if the pressure of the gas is decreased, while at the same time it is heated to a higher temperature, the final gas volume, O, could be either larger or smaller than 2.96 L.
If we decrease the pressure while keeping the temperature constant, according to Boyle's law, the volume of the gas will increase. So, in this case, O would be larger than 2.96 L. However, if we simultaneously increase the temperature while decreasing the pressure, the situation becomes more complex. The combined effect of the pressure decrease and temperature increase could lead to different outcomes for the final volume.
For example, if the pressure decrease is significant and the temperature increase is relatively small, the volume may still increase, resulting in O being larger than 2.96 L. On the other hand, if the pressure decrease is small and the temperature increase is significant, the volume may actually decrease, resulting in O being smaller than 2.96 L.
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what is ksp for the following equilibrium if hgbr2 has a molar solubility of 2.50×10−7 m? hgbr2(s)↽−−⇀hg2 (aq) 2br−(aq)
The Ksp for the equilibrium reaction HgBr₂(s) ⇄ Hg²⁺(aq) + 2Br⁻(aq) if HgBr₂ has a molar solubility of 2.50x10⁻⁷ M is 6.25x10⁻²⁰.
The given reaction is:
HgBr₂(s) ⇄ Hg²⁺(aq) + 2Br⁻(aq) (1)
The equilibrium constant (Ksp) for the above reaction is given by:
\(Ksp = [Hg^{2+}][Br^{-}]^{2}\) (2)
At the equilibrium, we have (eq 1):
HgBr₂(s) ⇄ Hg²⁺(aq) + 2Br⁻(aq)
s 2s
Where:
s: is the molar solubility = 2.50x10⁻⁷ M
By entering the values of molar solubility into equation (2) we can find the value of Ksp
\(Ksp = [Hg^{2+}][Br^{-}]^{2} = s(2s)^{2} = 4s^{3} = 4(2.50\cdot 10^{-7})^{3} = 6.25\cdot 10^{-20}\)
Therefore, the Ksp is 6.25x10⁻²⁰.
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what element does HgNo
Answer:
Mercury is a chemical element with symbol Hg and atomic number 80. Classified as a transition metal, Mercury is a liquid at room temperature.
...
Explanation:
Answer:
Mercurous nitrate!
8
How does the section "Many Chemical And Physical Changes Are Happening In Nature relate to section "Matter Isn't Lost In
Photosynthesis"?
(A)
(B)
(C)
(D)
It provides another example of how matter is conserved within ecosystems.
It contradicts the statements that water undergoes physical changes.
It supports the claim water is cycled all over the world.
It presents a solution to the problem of water undergoing physical changes.
The section many chemical and pysical changes are Happening In nature relate to section "matter Isn't lost In photosynthesis" by the fact that,It provides another example of how matter is conserved within ecosystems.
What is mass conservation?Similar to the law of conservation of energy, the total mass of a system is conserved. Mass can neither be created nor be destroyed. However, the mass of a system can be transferred to another system or can be converted as heat energy.
Photosynthesis is the process of synthesizing chemical energy in green plants using light energy. The reaction involves the combination of carbon dioxide and water to form glucose and oxygen gas.
In this reaction, the total mass of the reactants is exactly equal to the total mass of the products. Hence, the mass is conserved. This is the case for all balanced chemical reactions and physical changes. Hence, option A is correct.
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What is the molarity of a solution of sodium hydroxide if 31. 4 mL is neutralized by 17. 8 mL of a 0. 149 M phosphoric acid?*Write a balanced equation and use stoichiometry to solve. *Round your answer to correct sig figs. Do NOT put units on your answer
0.253 M is the molarity of a solution of sodium hydroxide if 31. 4 mL is neutralized by 17. 8 mL of a 0. 149 M phosphoric acid
To determine the molarity of a solution of sodium hydroxide (NaOH) using the given information, we can write a balanced equation for the neutralization reaction between NaOH and phosphoric acid (H₃PO₄) and use stoichiometry to find the molarity. The volume of the phosphoric acid and its molarity are provided as 17.8 mL and 0.149 M, respectively. By finding the ratio of moles between NaOH and H₃PO₄, we can calculate the molarity of the NaOH solution.
The balanced equation for the neutralization reaction between NaOH and H₃PO₄ is:
3 NaOH + H₃PO₄ → Na₃PO₄ + 3 H2O
From the equation, we can see that the ratio between NaOH and H₃PO₄ is 3:1. Given that 17.8 mL of 0.149 M H₃PO₄ is neutralized, we can use stoichiometry to find the moles of NaOH.
The moles of H3PO4 can be calculated by multiplying the volume (in liters) by the molarity: 17.8 mL * 0.149 mol/L = 2.6512 * 10⁻³ mol.
Since the ratio between NaOH and H₃PO₄ is 3:1, the moles of NaOH would be three times that of H₃PO₄: 3 * 2.6512 * 10⁻³ mol = 7.9536 * 10^-3 mol.
Finally, we calculate the molarity of the NaOH solution by dividing the moles of NaOH by the volume of the NaOH solution in liters (31.4 mL = 31.4 * 10⁻³ L): (7.9536 * 10⁻³ mol) / (31.4 * 10⁻³ L) = 0.253 M.
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find the [oh−] of a 0.38 m aniline ( c6h5nh2 ) solution. (the value of kb for aniline ( c6h5nh2 ) is 3.9×10−10 .)
According to the question, the [oh−] of a 0.38 m aniline ( c6h5nh2 ) solution is 1.3 x 10-5 M.
What is aniline?Aniline is an organic compound with the formula C₆H₅NH₂. It is a colorless, volatile and flammable liquid with a characteristic odor. Aniline is the simplest member of the aromatic amines family and is mainly used as a precursor to polyurethane and other industrial chemicals. It is also used as a dye and a chemical intermediate. Aniline can be prepared from nitrobenzene and ethylamine. It is a basic compound with a pKb of 4.6. It can be reacted with acids to form salts, and it is also capable of forming hydrogen bonds. Aniline is used in the production of pharmaceuticals, rubber, dyes and a variety of other industrial chemicals. Its toxicity has made it the subject of regulatory control. Its derivatives, especially those containing nitro groups, are dangerous and can be explosive.
The [OH-] of a 0.38 M aniline (C₆H₅NH₂) solution can be calculated using the following equation: [OH-] = sqrt(Kb x [C₆H₅NH₂])
[OH-] = sqrt(3.9 x 10-10 x 0.38)
[OH-] = 1.3 x 10-5 M
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what is the product of the unbalanced equation blow
AL(s) + br2 (g)
Answer:
aluminium bromide
Explanation:
This is a synthesis reaction, where 2 individual molecules react to produce a single new compound.
The balanced chemical equation for the synthesis of aluminium metal and bromine gas is thus:
\(\large \textsf{$\rm 2Al_{\,(s)}+3Br_{\,2\,(g)}\rightarrow 2Al\,Br_{\,3\,(g)}$}\)
The product is therefore:
Aluminium bromideWhy does pure water have a water potential of 0?
Pure water have a water potential of 0 in terms of the kinetic energy possessed by water molecules.
Pure water's water potential is always assumed to be zero at standard pressure and temperature. It can be explained in terms of the water molecules' kinetic energy. Water molecules move quickly and continuously when it is in liquid form. The proportion of water molecules in pure water is highest. Pure water has no water potential, whereas aqueous solutions with higher solute concentrations have negative values. When there is more water present and the value is close to zero, an area has a higher water potential than when there is less water present.
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Gallium is a metallic element in Group III. It has similar properties to aluminium.
(a) (i) Describe the structure and bonding in a metallic element.
Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.
Therefore, the outermost shells of these atoms are incomplete due to the sharing of valence electrons, forming a lattice structure known as a metallic bond.Metallic elements have a unique crystal structure that occurs in two forms. The most common type of metal crystal structure is the body-centered cubic structure where the atoms are arranged in a cube with one atom located at the center of the cube. The other type of metal crystal structure is the face-centered cubic structure, where each corner of the cube is an atom and there is an additional atom at the center of each face of the cube .Metallic bonding occurs due to the delocalized electrons that exist in the metal structure. The valence electrons from each atom are free to move throughout the entire metal lattice. Therefore, these electrons form a "sea of electrons" that is shared by all the atoms in the lattice. This results in the metal structure having high thermal and electrical conductivity.Metals are known for their ductility and malleability properties. These properties are due to the metallic bonding that exists in the metal structure. Since the valence electrons are shared, they can easily move past one another, allowing the metal to be hammered into different shapes without breaking.The properties of metals vary depending on their structure and bonding. Gallium, being a metallic element in Group III, has similar properties to aluminum. Therefore, it has a similar metallic bond structure with delocalized electrons that provide the metal with its unique properties.For such more question on valence electrons
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what is ore of iron
Iron ore are rock rocks
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Variable definition
Answer: is factor that change in a controlled experiment
Explanation:
What pillar of sustainability is broken by recycling
electronics in India? Should the US make a law that electronics can
only be recycled in the US?
The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.
Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.
However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.
Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.
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How do intermolecular forces among entities in an ideal gas compare to those among entities in a real gas
Answer:
An ideal gas has identical particles of zero volume, with no intermolecular forces between them. The atoms or molecules in an ideal gas move at the same speed. Almost all gases obey the gas laws within a limited range of pressures and temperatures.
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Why are feedback loops a way to see what direction our planet may be heading and how to prevent harmful changes?
The following is the reason why are feedback loops a way to see what direction our planet may be heading and how to prevent harmful changes.
What is a feedback loop?
A feedback loop is what accelerates or decelerates the trend. Our planetary system has many feedback loops to understand which direction the Earth is moving, including environmental feedback, climate feedback, and warming feedback. You can take the necessary steps to control it and see the results through a feedback loop. This will prevent harmful changes.
There are two types of loops. Positive feedback accelerates environmental deterioration, negative feedback means environmental deterioration. Global warming is a current trend in today's world where positive feedback is running, meaning that warming is increasing. Understanding feedback can help us know the direction of the planet. can.
Positive feedback means that global warming is progressing, environmental degradation is progressing, etc. Negative feedback means that global warming is decreasing and the environment is increasing.Hence, You can prevent disasters by knowing the trend of increase and decrease. If the warming progresses, we can take the necessary steps to control it and see the results through a feedback loop. This will prevent harmful changes.
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Explain the difference between Carbon-9 and Carbon-14. Which version Carbon do you believe is the most stable? Why? What information could help you confirm your prediction?
correct form of question is
Explain the difference between Carbon-12 and Carbon-14. Which version Carbon do you believe is the most stable? Why? What information could help you confirm your prediction?
Answer:
Carbon has three isotopes those are carbon- 12 , carbon - 13 , carbon-14 among these only C-12 and C-13 are stable while C-14 is radioactive.
C-12 has 6 protons and 6 neutrons , C-14 has 6 protons and 8 neutrons. Atoms with equal number of protons and electrons are generally stable however C-12 and C-14 have 6 electrons but due to excess neutrons present in C-14 makes it undergo radioactivity therefore it is unstable.
Terry bought a gold necklace at a pawnshop and was wondering if it was “real” gold. She decided to perform a density test. She placed the necklace in a graduated cylinder of water that had 47.00 mL of water and the water rose to 48.35 mL. She then weighed the necklace and found it to have a mass of 22.89 g. What is the density of Terry’s necklace?
Answer:
d = 16.96 g/mL
Explanation:
Given that,
Initial water level in graduated cylinder is 47 mL and final water level is 48.35 mL.
The weight of the neclace is 22.89 g.\
We need to find the volume of the necklace. We know that, density equals mass per unit volume. So,
\(d=\dfrac{m}{V_f-V_i}\\\\d=\dfrac{22.89\ g}{(48.35-47)\ mL}\\\\d=16.96\ g/mL\)'
Hence, the density of Terry’s necklace is 16.96 g/mL.
Answer:
A
Explanation:
The new mine means the supply is high and the price is low, so she can afford the necklace
What is required for electrons to move from the stable energy level to an excited state?
answer
When an electron temporarily occupies an energy state greater than its ground state, it is in an excited state. An electron can become excited if it is given extra energy, such as if it absorbs a photon, or packet of light, or collides with a nearby atom or particle
What is the purpose of a catalyst?
Answer:
option c
Explanation:
as catalyst increases the reaction while activation energy is inversely proportional to rate of reaction, so option c is correct
The purpose of a catalyst to lower the activation energy of a reaction.
What is catalyst?A type of chemical that, without becoming consumed by the process, speeding a chemical reaction or reduce the temperature as well as the pressure required to initiate one. The addition of a catalyst to speed up a reaction is known as catalysis.
What is activation energy?The bare minimum additional energy needed by a reactive molecule to transform into a product is considered as activation energy.
The purpose of a catalyst is to lower the activation energy of a reaction.
Therefore, the correct answer will be an option (C).
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janzen, h. h. and bettany, j. r. 1984. sulfur nutrition of rapeseed: i. influence of fertilizer nitrogen and sulfur rates. soil sci. soc. am. j. 48: 100–107
The study conducted by Janzen and Bettany in 1984 investigated the influence of nitrogen and sulfur fertilizer rates on the sulfur nutrition of rapeseed plants.
The researchers examined the relationship between the application rates of nitrogen and sulfur fertilizers and their effects on the growth and sulfur uptake of rapeseed plants.
In their study, Janzen and Bettany focused on understanding the impact of nitrogen and sulfur fertilizers on rapeseed plants' sulfur nutrition. They conducted experiments where different rates of nitrogen and sulfur fertilizers were applied to the soil, and the growth and sulfur uptake of rapeseed plants were measured. The researchers aimed to determine the optimal fertilizer rates that would promote adequate sulfur nutrition in the plants, leading to better growth and development.
The study's findings provided insights into the relationship between nitrogen and sulfur fertilizers and their influence on rapeseed plants' sulfur nutrition. This information can be valuable for agricultural practices, helping farmers optimize fertilizer application to enhance crop yield and quality. Additionally, the study contributes to the broader understanding of plant nutrient interactions and the importance of sulfur nutrition in the growth of rapeseed plants.
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A chemist is attempting to identify an unknown compound by determining the mass percent of calcium in an unknown sample. Using a 40.0 g sample of the unknown compound, the chemist obtains 8.02 g of calcium. Which of the following compounds is the unknown calcium compound?
I already know the answer (CaBr^2) Calcium Bromide, but I was wondering what are the steps that need to be taken to come to that answer.
A chemist is attempting to identify an unknown compound by determining the mass percent of calcium in an unknown sample. So calcium bromide is the unknown calcium compound.
What is compound?Compound is defined as a chemical compound made up of many similar molecules bound together by chemical bonds and contains atoms from multiple chemical elements Therefore, a molecule made up of only one type of atom is not a compound.
After dividing the mass of the element in 1 mole of the compound by the compound's molar mass, the result is the mass percent of the element in the compound, which is then multiplied by 100. Subtract the empirical formula for molar mass from the molar mass of the chemical.
Thus, a chemist is attempting to identify an unknown compound by determining the mass percent of calcium in an unknown sample. So calcium bromide is the unknown calcium compound.
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Using the ideal Gas Law, derive an expression relating the concentration of a gas μg
−3
(X) with the concentration expressed in ppm (Y). (10 pts) Hint: - Ideal gas law PV=nRt −R=0.0821 atm mol
−1
−MW=X= molecular weight
The expression relating the concentration of a gas in \(\mu g/m^-^3 (X)\) with the concentration expressed in ppm (Y) is \(Y = (X/MW) * 10^6 / V\)
To derive an expression relating the concentration of a gas in \(\mu g/m^3 (X)\) with the concentration expressed in ppm (Y), we can use the ideal gas law. The ideal gas law states that \(PV = nRT\), where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. Rearranging the equation, we have \(n = PV/RT\)
To convert the concentration from \(\mu g/m^-^3 (X)\) to moles (n), we divide X by the molecular weight (MW) of the gas. Thus, \(n = X/MW\)
Combining the two equations, we have \(X/MW = PV/RT\)
Since the concentration expressed in ppm (Y) is the same as the number of moles per million parts of air, we can write \(Y = n * 10^6 / V\)
Substituting \(n = X/MW\), we get \(Y = (X/MW) * 10^6 / V\)
Therefore, the expression relating the concentration of a gas in \(\mu g/m^3 (X)\) with the concentration expressed in ppm (Y) is:
\(Y = (X/MW) * 10^6 / V\)
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Complete question is:
Using the ideal Gas Law, derive an expression relating the concentration of a gas \(\mu_g^-^3 (X)\) with the concentration expressed in ppm (Y). (10 pts) Hint:- Ideal gas law \(PV= nRt -R = 0.0821 atm mol^-^1\) −MW=X= molecular weight
Health risks to beachgoers. According to a University of Florida veterinary researcher, the longer a beachgoer sits in wet sand or stays in the water, the higher the health risk (University of Florida News, Jan. 29, 2008). Using data collected at 3 Florida beaches, the researcher discovered the following: (1) 6 out of 1,000 people exposed to wet sand for a 10-minute period will acquire gastroenteritis; (2) 12 out of 100 people exposed to wet sand for two consecutive hours will acquire gastroenteritis; (3) 7 out of 1,000 people exposed to ocean water for a 10 -minute period will acquire gastroenteritis; and (4) 7 out of 100 people exposed to ocean water for a 70 -minute period will acquire gastroenteritis. a. If a beachgoer spends 10 minutes in the wet sand, what is the probability that he or she will acquire gastroenteritis? b. If a beachgoer spends two hours in the wet sand, what is the probability that he or she will acquire gastroenteritis? c. If a beachgoer spends 10 minutes in the ocean water, what is the probability that he or she will acquire gastroenteritis? d. If a beachgoer spends 70 minutes in the ocean water, what is the probability that he or she will acquire gastroenteritis?
The probabilities are as follows:
(a) Probability = 0.006
(b) Probability = 0.12
(c) Probability = 0.007
(d) Probability = 0.07
To calculate the probabilities of acquiring gastroenteritis based on the given data, we can use the following information:
(a) 6 out of 1,000 people exposed to wet sand for a 10-minute period will acquire gastroenteritis.
(b) 12 out of 100 people exposed to wet sand for two consecutive hours will acquire gastroenteritis.
(c) 7 out of 1,000 people exposed to ocean water for a 10-minute period will acquire gastroenteritis.
(d) 7 out of 100 people exposed to ocean water for a 70-minute period will acquire gastroenteritis.
Let's calculate the probabilities for each scenario:
(a) Probability of acquiring gastroenteritis after spending 10 minutes in the wet sand:
P(acquiring gastroenteritis|10 minutes in wet sand) = 6/1000 = 0.006.
(b) Probability of acquiring gastroenteritis after spending two hours (120 minutes) in the wet sand:
P(acquiring gastroenteritis|2 hours in wet sand) = 12/100 = 0.12.
(c) Probability of acquiring gastroenteritis after spending 10 minutes in the ocean water:
P(acquiring gastroenteritis|10 minutes in ocean water) = 7/1000 = 0.007.
(d) Probability of acquiring gastroenteritis after spending 70 minutes in the ocean water:
P(acquiring gastroenteritis|70 minutes in ocean water) = 7/100 = 0.07.
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What color of light would a photon appear to be if it had a frequency of 5. 4×1014Hz?
A photon with a frequency of 5.4 × \(10^1^4\) Hz would appear as violet light.
The color of light is determined by its frequency. Different frequencies correspond to different colors in the visible light spectrum. The relationship between frequency and color is described by the electromagnetic spectrum, which ranges from high-frequency gamma rays to low-frequency radio waves. In the visible light portion of the spectrum, higher frequencies correspond to colors towards the violet end, while lower frequencies correspond to colors towards the red end.
To determine the color of light with a given frequency, we can refer to the visible light spectrum. The frequency of the given photon is 5.4 × \(10^1^4\)Hz.
The visible light spectrum ranges from approximately 4.3 × \(10^1^4\) Hz (violet) to 7.5 ×\(10^1^4\)Hz (red). Since the given frequency falls within this range, it corresponds to a color within the visible spectrum.
Considering the given frequency of 5.4 × \(10^1^4\) Hz, it falls towards the higher end of the visible light spectrum. Therefore, the corresponding color would be towards the violet end of the spectrum.
Note: It's important to mention that the perception of color can also be influenced by factors such as intensity and the presence of other colors. This explanation assumes a pure, single-frequency photon.
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In which of the following processes do the molecules become more orderly? Olemonade mix dissolving in water water freezing O ice melting O dry ice subliming O rubbing alcohol evaporating
The following processes in which the molecules become more orderly is:
b) water freezing.
In water freezing, the molecules transition from a liquid state to a solid state as the temperature decreases. As the temperature drops below the freezing point, the water molecules arrange themselves in a more ordered and structured manner, forming a solid crystal lattice. The molecules align themselves in a specific pattern, with fixed positions and regular spacing between them.
In contrast, the other options involve processes where the molecules become less orderly:
a) Lemonade mix dissolving in water: When the lemonade mix dissolves in water, the molecules of the mix disperse throughout the water, creating a homogeneous solution. The molecules become more randomly distributed, rather than ordered.
c) Ice melting: Ice melting occurs when the temperature increases, causing the solid ice to transition into liquid water. The molecules gain enough energy to break free from their fixed positions in the crystal lattice, resulting in a more disordered arrangement.
d) Dry ice subliming: Dry ice, which is solid carbon dioxide, sublimes when it is exposed to warmer temperatures. Instead of melting into a liquid, dry ice directly converts from a solid to a gas. The molecules rapidly escape the solid state and disperse as a gas, leading to a more chaotic arrangement.
e) Rubbing alcohol evaporating: Evaporation of rubbing alcohol involves the liquid molecules gaining enough energy to transition into a gas phase. As the molecules gain energy, they escape the liquid surface and disperse as a gas. The process of evaporation does not involve an increase in orderliness.
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Classify each of the following as either a Lewis acid or a Lewis base. Drag the appropriate items to their respective bins.
Here is the explanation to the given question. Lewis AcidLewis BaseThe Lewis acid is the one that accepts electron pairs, whereas a Lewis base is the one that donates electron pairs.
The given options are:-
NH3 -NH4+-CH4 -NH2- -BF3 -B(OH)3 -Fe3+ -CO3^2-
In the given options, NH3 and NH2- are Lewis base, whereas BF3, B(OH)3, Fe3+ and CO3^2- are Lewis acid. CH4 is neither a Lewis base nor a Lewis acid.Lewis acids and bases are essential concepts in chemistry. A Lewis acid is a chemical species that accepts an electron pair, while a Lewis base is a species that donates an electron pair. The terms Lewis acid and base, named after the physical chemist Gilbert N. Lewis, refer to electron-pair donors and acceptors, respectively.
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QUESTION 6
Write the electron configuration of the following ions. Use the equation editing tool for neatness. It is symbolized with fx.
B a to the power of 2 plus end exponent C a to the power of 2 plus end exponent C u to the power of 2 plus end exponent L i to the power of plus K to the power of plus N a to the power of plus S r to the power of 2 plus end exponent
Electronic configuration of Ba²⁺ is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶; Ca²⁺ is 1s²2s²2p⁶3s²3p⁶; Li⁺ is 1s²; K⁺ is 1s²2s²2p⁶3s²3p⁶; Na⁺ is 1s²2s²2p⁶; Sr²⁺is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶.
Electronic configuration of the elements present in the periodic table is defined as the designation of atoms on the basis of the electrons present in their shells and subshells. The electrons entering in the same valence shell are grouped together which shows similarity in case of physical and chemical properties. Atoms tend to lose electron and attain stable positive charge so as to attain their nearest noble gas configuration.
Electronic configuration of
Ba²⁺ = 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶
Ca²⁺= 1s²2s²2p⁶3s²3p⁶
Li⁺=1s²
K⁺ = 1s²2s²2p⁶3s²3p⁶
Na⁺ = 1s²2s²2p⁶
Sr²⁺= 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶
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How many moles are in the following atoms? 2.75 x 1025 of tungsten
Answer:
Explanation:
the amount of a substance that contains 6.02 x 1023 respective particles of that substance
I actually dont know the answer but this is the most help I can offer.
this is a clue
A loop of wire moving through a magnetic field will create which of the following?
Magnetic force
An electric current
An electric force
A magnetic domain
A loop of wire moving through a magnetic field will create which of the following?
(A) Electrical Current
I am pretty sure that electromagnetic Induction states that moving a magnet through a loop of wire creates . Electrical Current. I consider this option to be correct because according to lenz's law conductor moves through loop and to be more exact in this case through an electrical current. I hope it help!
use standard reduction potentials to calculate the standard free energy change in kj for the reaction: ni2 (aq) 2fe2 (aq)ni(s) 2fe3 (aq) answer: kj k for this reaction would be than one.
In order to calculate the standard free energy change in kj for the reaction: Ni2+(aq) + 2Fe2+(aq) Ni(s) + 2Fe3+(aq), we will first write the balanced chemical equation: Ni2+(aq) + 2Fe2+(aq) Ni(s) + 2Fe3+(aq)Here, we need to calculate the standard free energy change (∆G°) for the reaction. the equilibrium constant (K) for this reaction would be greater than one.
To do so, we can use the formula: ∆G° = - mph Where, ∆G° is the standard free energy change is the number of electrons involved in the reaction F is the Faraday constant (96485 C/mol) E° is the standard electrode potential We can calculate the value of E° for each half-cell by using standard reduction potentials. The standard reduction potentials for Ni2+(aq) and Fe2+(aq) are given as follows:Ni2+(aq) + 2e- → Ni(s) E° = -0.25 V2Fe3+(aq) + 2e- → 2Fe2+(aq) E° = +0.77 V Now, we can calculate the standard free energy change (∆G°) for the given reaction:∆G° = - Naf Een = 2 (since 2 electrons are transferred)F = 96485 C/mole cell = Cathode - Encode= (+0.77) - (-0.25) = +1.02 V∆G° = - (2 × 96485 C/mol) × (+1.02 V)= - 196388 J/mol= -196.4 kJ/mol Thus, the standard free energy change in kJ for the given reaction is -196.4 kJ/mol. Since the value is negative, the reaction is spontaneous and the equilibrium constant (K) for this reaction would be greater than one.
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Classify and name the following acid: H2SnO2 (aq)
The acid with the formula H2SnO2 (aq) is called stannous acid.
What is Chemical Formula?
Chemical formulas are used to represent various types of chemical entities, including elements, compounds, ions, and molecules. They provide important information about the chemical composition and structure of a substance, allowing scientists and chemists to communicate and understand the properties and behavior of chemicals.
Stannous acid is a compound containing tin (Sn) in a +2 oxidation state (hence the prefix "stannous") and is derived from the oxide of tin, which is SnO2. The formula H2SnO2 indicates that stannous acid is a monoprotic acid, capable of donating two protons (H+) in solution. It is an inorganic acid and exists in aqueous solution (indicated by "(aq)").
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