when a substance like sugar dissolves in water, the particles intermingle. This is possible because the particles of sugar
a)have spaces between them
b)have strong attractions to eachother
c)are pure
d)are vaporized
Answers
Answer:
A
Explanation:
Related Questions
Given the reaction: 2 H2 + O2 => O2 = 2 H2O.
What is the total mass of water formed when 497.80 g of oxygen reacts with hydrogen?
Answers
1:2 mol ratio so multiple by 2
= 31.1125 mol of water
Mass = mol x Mr
= 31.1125 x 18 = 560.025g
In the given figure, red litmus paper is inserted in solution and colour remains unchanged then what may be contained in vessel among acid, base and salt solution? How can it be further tested to confirm it?
Answers
Answer:
Explanation: If the red litmus paper is inserted into the solution and the color remains unchanged, it indicates that the solution is likely a neutral solution or a solution with a pH close to 7. This means that it may contain either water or a salt solution.
To further confirm whether the solution contains a salt or water, we can perform a simple test using blue litmus paper. We can dip a blue litmus paper into the solution, and if it turns red, it indicates that the solution is acidic. If it remains blue, it indicates that the solution is basic.
If the blue litmus paper also does not change its color, it means that the solution is neutral or has a pH close to 7, which supports the possibility that the solution may contain either water or a salt solution.
To further test whether the solution contains a salt or not, we can perform a flame test. We can take a small amount of the solution and place it on a platinum wire loop and hold it in a Bunsen burner flame. If the flame produces a characteristic color, it indicates that the solution contains a salt. The characteristic color of the flame will depend on the metal ion present in the salt.
Overall, based on the initial test with the red litmus paper, the solution is likely neutral or close to neutral, and additional tests with blue litmus paper and flame test can be used to confirm whether the solution contains a salt or water.
maalox and mylanta are both antacids that contain aluminum hydroxide as their active ingredient. write the balanced equation for the neutralization of hydrochloric acid with aluminum hydroxide, al(oh)3. include physical states. neutralization reaction:
Answers
The balanced equation for the neutralization of hydrochloric acid with aluminum hydroxide is, 3HCl(aq) + Al(OH)₃(s) → AlCl₃(aq) + 3H₂O(l).
The neutralization reaction between hydrochloric acid (HCl) and aluminum hydroxide (Al(OH)₃) can be represented by the following balanced chemical equation,
3HCl(aq) + Al(OH)₃(s) → AlCl₃(aq) + 3H₂O(l)
In this equation, the hydrochloric acid (HCl) is in the aqueous state (indicated by "(aq)"), meaning it is dissolved in water. The aluminum hydroxide (Al(OH)₃) is in the solid state (indicated by "(s)"). When the acid and base react, they form aluminum chloride (AlCl₃) in the aqueous state and water (H₂O) in the liquid state.
This reaction is an example of a neutralization reaction, where an acid and a base react to form a salt and water. The aluminum hydroxide acts as a base, as it can accept hydrogen ions (H+) from the acid, and neutralize the acid. The resulting solution will have a neutral pH, indicating that the acid has been neutralized.
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Strong acids and strong alkalis are.......
Able to turn blue litmus paper red
Corrosive and/or caustic
Sour
Sweet
Which of the following pH numbers indicates a strong acid?
1
5
7
14
Answers
pH numbers up to 6 are acids and 8-14 are alkaline. 1 is the strongest acid, 6 being the weakest acid, and 14 is a strong alkaline and 8 is a weakest alkaline.
What is the overall process of balancing an equation?
Answers
Answer:
You need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal. :)
The image shows particles of salt dissolved in water.
How will the arrangement of salt particles most likely change?
Salt particles will move toward the left through diffusion.
Salt particles will move toward the left through active transport.
Salt particles will move toward the right through diffusion.
Salt particles will move toward the right through active transport.
Answers
Answer:
Salt particles will diffuse and towards where it is less that is left !!
so your answer is A !! left through diffusion !!
Explanation:
Answer:
Salt particles will move toward the left through diffusion
Explanation:
I just took the quiz.
A 10 liter tank of CO2 is at a pressure of 3.5 atm and a temperature of
25°C. How many moles of CO2 are in the tank?
Answers
The moles of CO2 are in the tank is mathematically given as
n=1.431
What are moles of CO2 are in the tank?Question Parameters:
A 10-liter tank of CO2 is at a pressure of 3.5 atm and a temperature of
25°C.
Generally, the equation for the ideal gas is mathematically given as
PV=nRT
Therefore
n=PV/RT
n=354.638kpa*10/8.314 J/mol·K *298k
n=1.431
In conclusion, moles of CO2 is in the tank is
n=1.431
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two negative charges are placed near each other. what happens between the charges
Answers
Answer:
repulsion
Explanation:
Answer:
Explanation:
In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. ... Similarly, a negatively charged object will exert a repulsive force upon a second negatively charged object. Objects with like charge repel each other.
What is the ratio of hydrogen nuclei to helium nuclei in the solar wind sample that you have gathered
Answers
The ratio of hydrogen nuclei to helium nuclei in the solar wind sample that has been gathered is about 100:4. In other words, there are about 100 hydrogen nuclei for every 4 helium nuclei in the sample. The exact ratio can vary depending on factors such as the activity level of the Sun, but a typical value is around 100:4 (or 25:1 in terms of number of atoms).
This ratio of hydrogen nuclei to helium nuclei is one of the defining characteristics of the solar wind. The solar wind is composed primarily of charged particles (ions) that have been ejected from the outermost layers of the Sun and are traveling through space at high speeds. These ions are mostly hydrogen nuclei (protons) and helium nuclei (alpha particles). The ratio of hydrogen to helium in the solar wind is thought to reflect the composition of the Sun's outer layers and the nuclear reactions that occur in its core. The exact ratio can vary depending on factors such as the activity level of the Sun, but a typical value is around 100:4 (or 25:1 in terms of number of atoms).
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how long does it take for alka-seltzer to dissolve in cold water
Answers
Answer:
It takes longer for Alka-Seltzer to dissolve in cold water than in hot water.
The density of a sample of gold is 19.32 g/cm'. If the sample has a volume of 48.9 cm', what is the mass?
if two objects have the same mass but different volumes
Answers
Answer:
\(\boxed {\tt 944.748 \ grams}\)
Explanation:
The formula for density is:
\(d=\frac{m}{v}\)
Rearrange the formula for mass, m. Multiply both sides by v.
\(d*v=\frac{m}{v} *v\)
\(d*v=m\)
Mass is found by multiplying the mass by the volume.
The density of the gold is 19.32 grams per cubic centimeter. The volume is 48.9 cubic centimeters.
\(d= 19.32 \ g/cm^3 \\v=48.9 \ cm^3\)
Substitute the values into the formula.
\(m= 19.32 \ g/cm^3 *48.9 \ cm^3\)
Multiply. Note the centimeters cubed will cancel out.
\(m= 19.32 \ g * 48.9\)
\(m= 944.748 \ g\)
The mass of the gold is 944.748 grams.
Use the periodic table to determine the electron configuration for aluminum (AI) and arsenic (As) in
noble-gas notation
AL
o [Ar]3s23p!
lo (He]2s22p63s23p!
0 [Ne]3s23p!
0 [Ne]3s23p2
DONE
Answers
Answer:
Aluminum; [Ne]3s²3p¹
Arsenic; [Ar]3d¹⁰4s²4p³
Explanation:
Aluminum
From the periodic table, we have that aluminum, Al, is located in period 3, and group 3A of the periodic table
Therefore, the noble gas that comes before aluminum in the periodic table is neon Ne
The electronic configuration of aluminum is 1s²2s²2p⁶3s²3p¹
The electronic configuration of neon is 1s²2s²2p⁶
Therefore, the electronic configuration of aluminum in noble gas notation (Ne) is therefore;
[Ne]3s²3p¹
Arsenic
Arsenic is located after argon, Ar on the periodic table
The electronic configuration of arsenic is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³
The electronic configuration of argon is 1s²2s²2p⁶3s²3p⁶
The electronic configuration of arsenic in noble gas notation (Ar) is given as follows;
[Ar]3d¹⁰4s²4p³
please help me please
Answers
Answer:
C is my answer
Explanation:
none explain
state two importance of soil air to plants
Answers
Answer:
Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.
(Hope this helps) Sky
Can someone help? Ill give brainliest!
Directions: count each side of the reaction then Circle yes or no if it follows the law of conservation of mass
Answers
Answer:
It does follow the law of conservation of mass.
Explanation:
You start with 4 phosphorous atoms and 6 oxygen atoms, you end with 4 phosphorous atoms and 6 oxygen atoms.
When the equation NH4NO3 → N2O H2O is balanced the coefficient of N2O is?.
Answers
N2O's coefficient is equal to 4 when the equation NH4NO3 = N2O + H2O is balanced.
NH4NO3 is it a liquid or a solid?Commercially, ammonium nitrate is offered as both a colorless crystalline solid and as prills that have been treated for certain uses. water soluble. Does not naturally burn, but if in contact with combustible material, it will.
Is covalent NH4NO3 ionic?Covalent and ionic bonding are present in ammonium nitrate (NH 4 NO 3). Ammonium cation and Nitrate anion join forces to form an ionic connection. Since covalent bonds connect the atoms of nitrogen and hydrogen, the statement about ammonium nitrate is accurate.
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an ideal gas is taken around the cycle shown in this p-v diagram, from a to b to c and back to a. process b c is isothermal. what can you conclude about the net entropy change of the gas and its environment during the cycle?
Answers
The net entropy change of the gas and its environment during the cycle is zero, as it is a closed cycle.
The net entropy change of the gas and its current circumstance during the cycle displayed in the p-V outline can't be resolved exclusively from the data given. Nonetheless, since process b-c is isothermal, the entropy change of the gas during that interaction is given by Q/T, where Q is the intensity consumed by the gas and T is the outright temperature at which the cycle happens. Since the interaction is isothermal, T is steady, so the entropy change of the gas during b-c is relative to Q. Assuming Q is positive, the entropy change of the gas is positive, implying that the gas ends up being more scattered during that cycle.
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The complete question is:
An ideal gas is taken around the cycle shown in this p-V diagram, from a to btoc Pb and back to a. Process b c is isothermal. What can you conclude about the net entropy change of the gas and its environment during the cycle? a) It is zero. b) It is positive c) It is negative. d) Two of A, B, and C are possible. e) All three of A, B, and C are possible 0 Two point charges and a point P lie at the vertices of an equilateral triangle as shown. Both point charges have the same magnitude q but opposite signs. There is nothing at point P. The net electric field that charges #1 and #2 produce at point P is in a) the ty-direction b) the-y direction c) the +x-direction. d) the-x-direction. ) none of the above. ) Charge #1 -q +q Charge #2 Constants R 8.314 mol K Isochoric Isobaric sothermal Adiabatic Constant Constant Constant No heat volume pressure temperature transfer Cice = 2.00e3 kg c steam2.00e3 kg c for water = 33.Se4 し,for water = 226e5 Na = 6,022e23- (efficiency) (carnot efficiency) On QH molecules .nole (adiabats only) (adiabats only) Nm pyr = constant TV"-1 = constant W71İ(pik-P2V2) (adiabats only) Any other needed constants should be given in the problems Heat and Temperature TKelvin = TCelcius + 273.15 EtotalB Misc Density 1 Dimension Thermal properties of matter Uniform (p+ (V-nb) = nRT NonUniform dm dL For Ideal Gas dm dA Ker = nRT (for degrees of freedom f) dv Valatonn.-5, Ynonatomic = 3 nonconservative forces-ΔΕ AL-Texternalt
if two molecules of glucose (c6h12o6) are joined via condensation synthesis, the resulting molecule would have a molecular formula of .
Answers
The condensation reaction between two molecules of glucose would result in the formation of maltose (C12H22O11) and the release of water.
Carbohydrates are organic compounds that are used to store energy. An example of a carbohydrate is glucose, which is a single sugar or a monosaccharide. The process of forming larger molecules from the combination of simple sugars is called the condensation process. A water molecule is released in the process of combining the molecules together through a glycosidic bond.
The condensation reaction for two molecules of glucose (C6H12O6) results in the formation of maltose, a disaccharide, and the release of water. The molecular formula of maltose is C12H22O11. It can be observed that the condensation reaction shown below is balanced.
Glucose (C6H12O6) + Glucose (C6H12O6) → Maltose (C12H22O11) +H2O
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65 g of nitric acid are produced in a reaction. 2. 5 g of platinum are added to the reaction vessel at the start of the reaction to act as a catalyst. How much platinum will there be left in the vessel at the end of the reaction?.
Answers
2..5 grams of platinum will be there at the end of the reaction, because Platinum is the catalyst here.
Catalyst is a substance that can be added to a chemical reaction to increase the rate of reaction without getting itself consumed in the reaction. It just acts as a driving force for the reaction and it itself does not take part in the chemical reaction.
Catalysts basically speeds up a reaction by reducing the activation energy or also by changing the reaction mechanism. Enzymes are proteins that act as catalysts in the biological systems.
In the above given question if 2.5 grams of platinum is added to the reaction vessel then at the end of the reaction 2.5 grams of platinum itself will be remaining because it acts as a catalyst here.
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An experiment was performed to determine the empirical formula of iron bromide. A 2.00 g sample of iron was reacted with 1.00 g bromide. After the reaction, the iron bromide was removed and the excess iron was weighed and determined to have a mass of 1.65 g.
A. Calculate the mass of iron that reacted.
B. Calculate the moles of bromine that reacted.
C. Calculate the moles of iron that reacted.
D. Use the moles of iron and moles of bromine to determine the empirical formula for the iron
bromide.
Answers
A. The mass of iron that reacted can be calculated by subtracting the mass of excess iron from the total mass of iron used:
Mass of iron that reacted = Total mass of iron used - Mass of excess iron
Mass of iron that reacted = 2.00 g - 1.65 g
Mass of iron that reacted = 0.35 g
B. The moles of bromine that reacted can be calculated using its molar mass:
Molar mass of Br = 79.90 g/mol
Moles of bromine that reacted = Mass of bromine used / Molar mass of Br
Moles of bromine that reacted = 1.00 g / 79.90 g/mol
Moles of bromine that reacted = 0.0125 mol
C. The moles of iron that reacted can be calculated using its molar mass:
Molar mass of Fe = 55.85 g/mol
Moles of iron that reacted = Mass of iron used / Molar mass of Fe
Moles of iron that reacted = 0.35 g / 55.85 g/mol
Moles of iron that reacted = 0.00627 mol
D. The empirical formula can be determined by dividing the moles of each element by the smallest number of moles. The smallest number of moles is 0.00627 mol, which corresponds to iron:
Iron: Moles = 0.00627 mol / 0.00627 mol = 1
Bromine: Moles = 0.0125 mol / 0.00627 mol = 1.99 ≈ 2
Therefore, the empirical formula of iron bromide is FeBr2.
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Dr. Michelle Wang at Cornell University studies DNA replication and protein synthesis. Her group researches how a protein called helicase unzips the DNA strand.
After DNA is unzipped, what is the next step in DNA replication?
A. Messenger RNA forms along the exposed DNA bases.
B. A chromosome with two identical strands of DNA is formed.
C. Nitrogen bases pair up with the DNA strands.
D. Ribosomes attach to DNA and move along the strand.
Answers
Answer:
C. Nitrogen bases pair up with the DNA strands.
Explanation:
The correct option would be that nitrogen bases pair up with DNA strands.
DNA replication is a process during which a DNA molecule makes a copy of itself. It represents one of the major processes of gene expression.
DNA replication happens in several steps and it involves several important enzymes: The steps can be summarized in chronological order as follows:
The double helix structure of the DNA is first unwound using a helicase enzyme.A short RNA sequence known as primer binds to each DNA strand. Binding is done at a single site on the leading strand while it is done at multiple sites on the lagging strand.An enzyme known as DNA polymerase then elongates the primers by adding nucleotide bases to grow new strands.Once elongation is complete, the primer disengage and the RNA nucleotide bases are replaced DNA equivalence, the okazaki fragments of the lagging strands is joined by a ligase, the nely synthesized strands are proofread and each strand winds up to their respective parent strand.Hence, the correct option would be that nitrogen bases pair up with the DNA strand.
Correct option: C.
How many atoms are in 5.67 L of Neon at STP
Answers
The number of atoms in the given volume of Neon at Standard conditions for temperature and pressure is 1.505 × 10²².
What is Ideal Gas Law?The Ideal gas law or general gas equation emphasizes on the state or behavior of a hypothetical ideal gas. It states that "the pressure multiplied by volume is equal to moles multiply by the universal gas constant multiply by temperature.
It is expressed as;
PV = nRT
Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant ( 0.08206 Latm/molK )
Given the data in the question;
Volume of the gas V = 5.67LAt Standard conditions for temperature and pressure
P = 1.0atmT = 273.15KAmount of gas n = ?We substitute our values into the expression above.
PV = nRT
n = PV / RT
n = 1.0atm × 5.67L / ( 0.08206Latm/molK × 273.15K )
n = 5.67Latm / 22.414689Latm/mol
n = 0.25mol
Now, number of mol n = 0.25mol
Number of molecules = moles × Avogadro’s Number
Number of molecules = 0.25 × (6.022×10²³)
Number of molecules = 1.505 × 10²²
Therefore, the number of atoms in the given volume of Neon at Standard conditions for temperature and pressure is 1.505 × 10²².
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pha 1000ml dung dịch natri hydroxyd xấp xỉ 0.1N. Xác định độ chuẩn bằng 10ml đ acid hydroclorid 0.1N có K=0.950 hết 11ml dung dịch natri hydroxyd vừa pha
a)tính hệ số hiệu chỉnh K của dung dịch natri hydroxyd
b)tính toán để điều chỉnh nồng độ 990ml dung dịch natri hydroxyd
Answers
Answer:
please translate to English so I can help
Explanation:
the reason is bc I cant read this so jus comment in English and I'll reply the answer
how can you find the charge on po4
Answers
Answer:
Answer:
Explanation:
I hope it's helpful!
...
PO43- Step 8.
What is the mass in grams of one atom of Ag
Answers
Answer:
The mass of 1 atom of silver is 1.79 x 10-22g.
* Calcium chloride can be prepared by the reaction of calcium with chlorine gas.
Figure 9 shows some properties of calcium chlorine and calcium chloride
ability to conduct electricity
substance
relative melting
point
when solid
when molten
calcium
high
good
good
chlorine
low
poor
poor
calcium chloride
high
poor
good
Figure 9
Explain, in terms of bonding and structure, why the properties of the product,
calcium chloride, are different from the properties of the reactants, calcium
and chlorine
Answers
The difference in properties between the reactants (calcium and chlorine) and the product (calcium chloride) can be explained by considering the bonding and structure of the substances involved.
Calcium is a metal, while chlorine is a nonmetal. In the reaction between calcium and chlorine gas, calcium donates two electrons to chlorine, resulting in the formation of calcium chloride (CaCl2). This process involves the formation of ionic bonds.
Calcium chloride has a different structure and bonding compared to its reactants. In the solid state, calcium chloride forms a crystal lattice structure composed of alternating calcium cations (Ca2+) and chloride anions (Cl-). This ionic bonding arrangement leads to strong electrostatic attractions between the oppositely charged ions.
The properties mentioned in Figure 9 can be explained based on this structure and bonding:
Ability to Conduct Electricity: Calcium chloride, when dissolved in water or in its molten state, can conduct electricity. This is because the ions in calcium chloride are free to move and carry electric charge, facilitating the flow of electricity. In contrast, solid calcium and chlorine do not conduct electricity well as they do not have freely mobile charged particles.
Relative Melting Point: Calcium chloride has a high melting point compared to chlorine. This is due to the strong ionic bonds between calcium and chloride ions in the crystal lattice, requiring significant energy to break those bonds and transition from a solid to a liquid state. Chlorine, being a nonmetal, has weaker intermolecular forces, resulting in a lower melting point.
Based on the differences in bonding and structure, the properties of the product (calcium chloride) differ from those of the reactants (calcium and chlorine), particularly in terms of electrical conductivity and melting point.
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A beam of light exhibits diffraction when it passes through a small opening.
Which model of the nature of light does this example support?
A. The interference model
B. The wave model
C. The diffraction model
D. The particle model
Answers
Answer:
The wave model
Explanation:
Answer:
The wave model
Explanation:
Newton's Law of Cooling (which applies to warming as well) says that the temperature difference between an object and its surroundings is an exponentially decaying function of time, provided that surrounding temperature remains constant. Suppose that the surrounding temperature does not depend on time, and denote this temperature Tn. Let T(t) be the temperature of an object at time t. Translating "the temperature difference between an object and its surroundings is an exponentially decaying function of time" into an equation yields T(t)−Ts=ae−kt where a and k are constants. (More specifically we know k>0, otherwise the object temperature wouldn't approach the surrounding temperature in the long run.) Without too much trouble it can be deduced that T(t)−Ts=(T0−Ts)e−kt, where T0 is the temperature of the object at t=0. A 98∘C hard-boiled egg is put into a big pot of 18∘C water at t=0, where t is measured in minutes. After 5 minutes the temperature of the egg drops to 38∘C. 1. Use the data above to solve for T(t), the temperature of the egg at time t. The only variable in your answer should be the input, t. 2. What is a realistic domain of the temperature function? 3. Draw a rough sketch of the function and label any intercepts and asymptotes. 4. Assuming the water has not warmed appreciably, how long does it take the egg to cool to a temperature of 20∘C ?
Answers
1) The temperature of the egg at time t can be calculated using the equation T(t) = 18 + 80 * e^(-0.168t), where t is the time measured in minutes.
2) The realistic domain of the temperature function is t ≥ 0, meaning time cannot be negative.
3) A rough analysis of the temperature function shows an exponential decay curve starting at 98°C and approaching 18°C asymptotically. There is an intercept at t = 0, corresponding to the initial temperature of 98°C.
4) It takes approximately 18.17 minutes for the egg to cool to a temperature of 20°C.
1.
To solve for T(t), we can use the formula derived from Newton's Law of Cooling:
T(t) - Ts = (T0 - Ts) * e^(-kt)
Given the initial conditions:
T0 = 98°C (initial temperature of the egg)
Ts = 18°C (surrounding temperature)
T(5) = 38°C (temperature of the egg after 5 minutes)
We can substitute these values into the equation:
T(5) - 18 = (98 - 18) * e^(-5k)
20 = 80 * e^(-5k)
Dividing both sides by 80:
1/4 = e^(-5k)
Take the natural logarithm of both sides:
ln(1/4) = -5k
Solving for k:
k = -ln(1/4) / 5 ≈ 0.168
Now we have the value of k. We can substitute it back into the equation to get the temperature function:
T(t) - 18 = (98 - 18) * e^(-0.168t)
Simplifying further:
T(t) = 18 + 80 * e^(-0.168t)
2.
The realistic domain of the temperature function is t ≥ 0 since time cannot be negative.
3.
Analyzing the function:
The function is exponential decay, starting at 98°C and approaching 18°C asymptotically. There is an intercept at t = 0, where the temperature is 98°C. As time progresses, the temperature decreases and approaches 18°C. However, it never reaches exactly 18°C due to the exponential decay nature of the function.
4.
To find the time it takes for the egg to cool to a temperature of 20°C, we can substitute T(t) = 20 and solve for t:
20 = 18 + 80 * e^(-0.168t)
2 = 80 * e^(-0.168t)
Dividing both sides by 80:
1/40 = e^(-0.168t)
Taking the natural logarithm of both sides:
ln(1/40) = -0.168t
Solving for t:
t = -ln(1/40) / (-0.168) ≈ 18.17 minutes
Therefore, it takes approximately 18.17 minutes for the egg to cool to a temperature of 20°C.
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Someone help me pls I need this correct
Answers
Answer:
Outermost layer of skin: Epidermis
Raised line of skin: friction ridges
Fingerprint pattern: Whorl
Small details in ridges: minutia
(I believe this is correct)
2: friction ridge
3: whorl
4: minutia whorl
hope this helps sorry if number 2 is not accurate
which is the correct answer
Answers
Answer:
3
Explanation:
Answer:
3. 0.50 mol
Explanation: