What is the main difference between gases and liquids
Answers
Answer:
1.Liquids have less force of attraction between molecules than solids and more than gases; gases have a very weak force of attraction between the molecules which is the least amongst the three states of matter. 2.Liquids have definite volume; gases do not have definite volume.
Explanation:
:) HOPE THIS HELPS
Answer:
particles
Explanation:
particles are buzzing around very quickly when in a gas, but when in a liquid they vibrate.
Related Questions
Please help me I really need it :(
Answers
2)If the amount of gas in a car changes then the distance a car can travel doesn’t change because the amount of gas doesn’t affect the distance a car can travel.
this is in 7th grade form so it might not be good if you’re in a higher grade
Objects in the universe vary in their composition. Which of the following best describes the composition of a galaxy?
Answers
Answer:
A because galaxy turns jggf
Oxidation of the carbon farthest from the carbonyl group of a fatty acid is called: A. a oxidationB. b-oxidationC. w-oxidationD. The reaction does not occurE. Either A or B are correct depending on the point of reference
Answers
Oxidation of the carbon farthest from the carbonyl group of a fatty acid is called w-oxidation.
What is Oxidation?
When an object comes into touch with oxygen or the other oxidizer, a chemical reaction occurs. Rusty and the brown color of a sliced apples are both evidence of oxidation.
An oxidation reaction takes place when oxygen interacts with a substance or an element. Another way to think of oxidation is as the process of removing hydrogen from the species of reactants. Molecule, atom, or ion oxidation is the process of losing electrons.
Therefore, Option C is correct.
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How do you calculate half-life?
Answers
The half-life formula is used to determine the half-life of a material whose quantity is degrading or decreasing. When a substance degrades, the rate of decay varies depending on the quantity present. \(t_{1/2}\)=0.693/λ
Finding the life of a decaying substance is highly challenging since when the substance's quantity decreases, the pace of decay slows down as well. The appropriate metrics to define the life of degrading material are therefore provided by the half-life formula. Let's find solutions to a few examples and learn more about the half-life formula in this part.
A quantity's half-life is the amount of time needed for it to change from its initial value to half, or how long it takes for half of a given sample to react. The speed at which an atom decays radioactively is described by the half-life formula, frequently used in nuclear physics.
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The element is:
The number 6 refers to the number of:
The numbers 12, 13, and 14 refer to the:
How many neutrons are in the first isotope?
How many neutrons are in the second isotope?
I
C&C C
How many neutrons are in the third isotope?
Answers
Answer:
The number 6 refers to the atomic number c. The numbers 12, 13, and 14 refer to the atomic mass d.
Explanation:
In this structure 6 represents atomic number that is the number of electrons or the number of protons and 13 represents the mass number (A). The number of neutrons (N) = mass number (A) − no. of electron or no. of proton. Hence N=13−6=7.
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Answer:
The number 6 refers to the atomic number c. The numbers 12, 13, and 14 refer to the atomic mass d.
Explanation:
What test would be done to prove the color of specific compounds is due to metal ions apart from flame test
Answers
Answer:
Borax bead test
Explanation:
Another test that can be used to identify colored ions in a specific compound such as salt is called "Borax bead test".
This test involves use of a clear glassy bead of borax that is joined together in a wire loop which is going to be involved in chemical reaction with the salts of certain metals.
This reaction will produce colors that we can use to identify the exact metal ions that are present.
All flowers have colorful petals and smell wonderful.
True
False
Answers
Answer:
false i am pretty sure because dead flowers.
a fire is which type of reaction? question 11 options: reduction single replacement double replacement reaction oxidation\
Answers
A fire is a single replacement reaction.
Fire converts fuel and oxygen chemically into carbon dioxide and water. Because it is an exothermic reaction, heat is produced. The reason for this is that the chemical connections between the oxygen molecule's molecules are often weak, but the new bonds formed are more stable and result in a net production of energy. During combustion events, carbon dioxide is not directly created. Instead, a large number of intermediate molecules are utilized along the path. Incomplete combustion can occasionally result in extraordinarily large concentrations of these intermediate molecules. For example, a flame that doesn't get enough oxygen may produce carbon monoxide instead of carbon dioxide.
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A cup of hot chocolate that has been stirred with a spoon. Which statement describes how heat flows from the coffee to the part of the spoon in the coffee? Heat flows from the coffee to the spoon through radiation. Heat flows from the coffee to the spoon through convection. Heat flows from the coffee to the spoon through conduction. Heat flows from the coffee to the spoon through radiation, convection, and conduction.
Answers
Answer:
Heat flows from the coffee to the spoon through conduction
Explanation:
Good luck <3
Answer:
C.Heat flows from the coffee to the spoon through conduction.
Explanation:
What is the volume of 1.5M HCl needed to acquire 4.5g of HCl?
Answers
Assuming the mass we have is only of HCl, not the whole solution, we can do the following steps:
- Use the molar mass of HCl to see how many moles of HCl correspond to 4.5g of HCl.
- Use the concentration of 1.5 M to see how much volume have the calculated number of moles of HCl.
To calculate the molar mass of HCl, we need the molar masses of H and Cl, which we can get from a periodic table:
\(\begin{gathered} M_H=1.00794g\/mol \\ M_{Cl}=35.453g\/mol \\ M_{HCl}=1\cdot M_H+1\cdot M_{Cl} \\ M_{HCl}=(1\cdot1.00794+1\cdot35.453)g\/mol \\ M_{HCl}=(1.00794+35.453)g\/mol \\ M_{HCl}=36.46094g\/mol \end{gathered}\)So, using it, we can calculate the number of moles of HCl in 4.5g of HCl:
\(\begin{gathered} M_{HCl}=\frac{m_{HCl}}{n_{HCl}} \\ n_{HCl}=\frac{m_{HCl}}{M_{HCl}} \\ n_{HCl}=\frac{4.5g}{36.46094g\/mol}=0.123419\ldots mol \end{gathered}\)Since concentration is number of moles of solute divided by the volume of solution, we have:
\(\begin{gathered} \lbrack HCl\rbrack=\frac{n_{HCl}}{V}_{} \\ V=\frac{n_{HCl}}{\lbrack HCl\rbrack} \\ V=\frac{0.123419\ldots mol}{1.5mol\/L}=0.082279\ldots L=82.279\ldots mL\approx82mL \end{gathered}\)So, to get 4.5 g of HCl from a solution of 1.5 M of HCl, we need approximately 82 mL.
The time for one cycle of a periodic process is called the:.
Answers
Answer:
Period
Explanation:
I believe your answer should be period.
I hope it helps! Sorry if it didn’t… Have a great day!
Layla~
You wish to know the enthalpy change for the formation of liquid from PCl3 from the elements.
P4(s) + 6 Cl2(g) ? 4 PCl3(l) ?rH° = ?
The enthalpy change for the formation of PCl5 from the elements can be determined experimentally, as can the enthalpy for the reaction of PCl3(l) with more chlorine to give PCl5(s):
P4(s) + 10 Cl2(g) ? 4 PCl5(s) ?rH° = -1774.0 kJ/mol-rxn
PCl3(l) + Cl2(g) ? PCl5(s) ?rH° = -123.8 kJ/mol-rxn
Use these data to calculate the enthalpy change for the formation of 1.00 mol of PCl3(l) from phosphorous and chlorine.
Answers
-2269.2kJ is the enthalpy change of a given equation for 4 moles . the negative value indicates that the given reactions are spontaneous reactions .
These equations and enthalpy of reaction is given by Hess’s law, the chemical equation can be treated as algebraic expressions . That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
P4(s) + 10 Cl2(g)--> 4 PCl5(s) ΔH°rxn= -1774.0 kJ
PCl3(l) + Cl2(g)--> PCl5(s) ΔH°rxn = -123.8 kJ ( Multiply by 4 )
then the value of enthalpy change for equation 2 be -495.2kJ
then according to enthalpy change equation
delta H = delta h1 - delta h2
delta H = -1774.0 -(- 495.2)
delta H = - 2269.2KJ
for 4 moles the value of enthalpy change is -2269.2kJ
the value of enthalpy change for 1 mole is - 567.3 KJ
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Which shows the correct order of steps during the formation of an ionic bond?
Answers
The correct Option is C. Electrons are transferred → Ions form → Ions are attracted to each other.
The right request of steps during the development of an ionic bond is:
C: Electrons are transferred → Ions form → Ions are attracted to each other
In ionic holding, at least one electrons are moved from a metal particle to a non-metal molecule, framing positive and negative particles, separately. The contrary charges of the particles draw in one another, subsequent in the arrangement of an ionic compound. Accordingly, the right request of steps in the development of an ionic bond is first, electrons are moved starting with one molecule then onto the next, then particles are framed, lastly, the oppositely charged particles are drawn to one another to shape an ionic compound.
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The complete question is:
Which shows the correct order of steps during the formation of an ionic bond?
A: Ions are attracted to each other → Electrons are transferred → An ionic compound forms
B: An ionic compound forms → Ions are attracted to each other → Electrons are transferred
C: Electrons are transferred → Ions form → Ions are attracted to each other
D: Ions form → Electrons are transferred → Ions are attracted to each other
Answer: C
Explanation: JUST TOOK THE QUIZ HOPE THIS HELPED
which 3 tubes were used to determine the optimal ph for amylase activity?
Answers
The three tubes used to determine the optimal pH for amylase activity are typically filled with buffer solutions at different pH values, such as pH 5.0, pH 7.0, and pH 9.0.
The optimal pH for amylase activity can be determined by testing the enzyme's activity at different pH levels. Typically, a range of pH values is tested to determine the optimal pH, and three tubes are commonly used for this purpose.
These three tubes are typically filled with a buffer solution at different pH values, such as pH 5.0, pH 7.0, and pH 9.0. The amylase enzyme is then added to each tube, and the activity of the enzyme is measured under each condition. By comparing the enzyme activity at different pH levels, the optimal pH for amylase activity can be determined.
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A reaction between 1. 7 moles of zinc iodide and excess sodium
Answers
The percent yield of zinc carbonate is 5.91%. This suggests that the reaction did not go to completion, and there was likely some loss of product during the experiment.
To find the percent yield of zinc carbonate, we need to compare the actual yield (what was obtained in the experiment) to the theoretical yield (what would be obtained if the reaction went to completion).
First, let's calculate the theoretical yield of zinc carbonate:
From the balanced equation, we can see that 1 mole of ZnI2 reacts with 1 mole of \(Na_{2}CO_{3}\) to produce 1 mole of \(ZnCO_{3}\).Since we have 1.7 moles of ZnI2, we would need 1.7 moles of \(Na_{2}CO_{3}\) to react completely.The molar mass of \(ZnCO_{3}\) is 125.39 g/mol, so the theoretical yield of \(ZnCO_{3}\) would be:theoretical yield = 1.7 mol ZnCO3 x 125.39 g/mol = 213.07 gNow, let's calculate the percent yield:
The actual yield \(ZnCO_{3}\) is given as 12.6 g.
The percent yield is calculated as:
percent yield = (actual yield / theoretical yield) x 100%percent yield = (12.6 g / 213.07 g) x 100% = 5.91%Learn more about zinc carbonate
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Full Question: A reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate. This is the equation for the reaction: Na2CO3 + ZnI2 → 2NaI + ZnCO3. What is the percent yield of zinc carbonate? The percent yield of zinc carbonate is %
a block of mass m is sliding with an initial speed vi along a horizontal surface with negligible friction. a constant force of magnitude fa is exerted on the object at an upward angle of 60∘ from the horizontal, causing the object to speed up. if the block remains in contact with the floor, what is the change in the block’s kinetic energy as it moves a horizontal distance δx ?
Answers
The change in kinetic energy is equal to the force of magnitude fa multiplied by the horizontal distance δx, which is equal to faδx.
What is kinetic energy?Kinetic energy is the energy possessed by an object due to its motion. It is a form of energy that is transferred during an impact or collision. Kinetic energy is calculated by multiplying the mass of the object times the square of its velocity. The faster an object is moving, the greater its kinetic energy. Kinetic energy can be converted into other forms of energy, such as heat or sound.
This is because the force is acting in the direction of the displacement, so the work done by the force is equal to the force multiplied by the displacement in the direction of the force. As the mass m is constant, the change in kinetic energy is equal to faδx/m.
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1. ni2 (nhbr, ph,o where m, n, and p represent the coefficients in the formula. an analysis of the salt can be obtained if a sample is dissolved by an acid-base reaction in excess acid and then the excess is titrated with naoh. that is, excess hci oh-h20 a 0.185-g sample of the nickel salt was dissolved in 30.00 ml of 0.1013 n hci. the excess hcl required 6.30 ml of 0.1262 n naoh to reach the end point. calculate the weight of the salt that contains one mole of nh3 (that is the equivalent weight of the salt) 2. propose a molecular formula for the salt in 3ni2(nh)mbrn ph20 that is consistent with this experimental equivalent weight.
Answers
The molecular formula for the salt consistent with this experimental equivalent weight is Ni2(NH2)Br(H2O).
What is acid-base reaction?The exchange of one or more hydrogen ions, H +, between species that may be neutral (molecules like water, H 2 O, or acetic acid, CH 3 CO 2 H) or electrically charged (ions like ammonium, NH 4+, hydroxide, OH, or carbonate, CO 32) is known as an acid-base reaction.
The first step to determining the equivalent weight of the salt is to calculate the number of moles of HCl that were used to neutralize the sample. This can be done by using the following formula:
moles HCl = (volume HCl) x (molarity HCl)
moles HCl = (30.00 mL) x (0.1013 mol/L) = 3.04 x 10^-2 mol
Next, we need to calculate the number of moles of NaOH that were used to neutralize the excess HCl. This can be done by using the following formula:
moles NaOH = (volume NaOH) x (molarity NaOH)
moles NaOH = (6.30 mL) x (0.1262 mol/L) = 7.97 x 10^-3 mol
We can use this number to calculate the number of moles of salt that was present in the original sample.
moles salt = (moles HCl) = 7.97 x 10^-3 mol
Now we can use this number to calculate the equivalent weight of the salt. The equivalent weight of a substance is defined as the molar mass of the substance divided by the number of moles of the substance that react with one mole of H+.
Equivalent weight of the salt = (mass of salt) / (moles of salt)
Equivalent weight of the salt = (0.185 g) / (7.97 x 10^-3 mol) = 23.2 g/mol
From the equivalent weight of the salt, we can observe that the equivalent weight is consistent with the formula Ni2 (NH)mBrn(H2O)p (where m,n,p represent coefficients in the formula).
The molar mass of Ni2 (NH)mBrn(H2O)p = 2*(Ni) + m*(NH3) + n*(Br) + p*(H2O)
2*(Ni) + m*(NH3) + n*(Br) + p*(H2O) = 23.2 g/mol
Therefore, the molecular formula for the salt consistent with this experimental equivalent weight is Ni2(NH2)Br(H2O).
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Someone help me with this pls
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Find the work that must be done on a proton to accelerate it from rest to a speed of 0.9c. The rest mass of a proton is 1.67 × 10-27 kg
Answers
The work that must be done on a proton to accelerate it from rest to a speed of 0.9c is approximately 2.15 × 10^-10 J.
According to Einstein's special theory of relativity, the mass of a particle increases as it approaches the speed of light. Therefore, the kinetic energy required to accelerate a proton to a speed of 0.9c (where c is the speed of light) will depend on its increased relativistic mass.
The formula for relativistic kinetic energy is:
K = [(γ - 1) * m] * c^2
where γ is the Lorentz factor and m is the rest mass of the proton. The Lorentz factor is given by:
γ = 1 / sqrt(1 - v^2/c^2)
where v is the velocity of the proton.
For this problem, we have m = 1.67 × 10-27 kg and v = 0.9c. Substituting these values into the equations above, we get:
γ = 2.29
K = [(γ - 1) * m] * c^2 = (1.29 * 1.67 × 10^-27 kg) * (3 × 10^8 m/s)^2 = 2.15 × 10^-10 J
Therefore, the work that must be done on a proton to accelerate it from rest to a speed of 0.9c is approximately 2.15 × 10^-10 J.
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What is the gravitational potential energy of a box that is 2.9 m off the ground and a mass of 12.5 kg? * 20 points
Answers
Answer:
362,5J
Explanation:
formula for calculating Gravitational Potential Energy is mass×gravitational field strength ×height
12.5×10×2.9=362,5J
what is your question in climate change?
Answers
Answer:
Why has my town experienced record-breaking cold and snowfall if the climate is warming? Is there scientific consensus that people are causing today's climate change? Do natural variations in climate contribute to today's climate change?
Explanation:
Yan po ang answer tama po yan
What is the relationship between the electron configuration of an element and the period in which that element appears in the periodic table?.
Answers
Answer:
The links are: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.
Explanation:
Water and salt are compounds made of the combination of more than one type of atom. Which statement is false?
Answers
Answer:
This statement is correct
Explanation:
Water is made up of 2 hydrogen atoms and 1 oxygen atom while salt is made up of 1 atom of sodium and 1 atom of chloride
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Two moles of an ideal gas are heated at constant pressure from a temperature of 30 ∘C to 100 ∘C. Calculate the work done by the gas.
Answers
Work done by given ideal gas = 1163.96 J
Work done by an ideal gas : W = -PΔV
From ideal gas equation, we know PV=nRT
Hence, PΔV = nRΔT
Hence, Work done by an ideal gas : W = -nRΔT
According to question, number of moles of given ideal gas = 2
R = gas constant = 8.314 J⋅K−1⋅mol−1
T1 = 30 ∘C = 303 K
T2 = 100 ∘C = 373K
Hence, ΔT = 373-303 = 70K
Putting these value in Work done by an ideal gas : W = -nRΔT
W = -(2)(8.314)(70) = 1163.96 J
Hence, Work done by given ideal gas = 1163.96 J
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A 0.477 mol sample of O_2 gas has a volume of 11.3 L at a certain temperature and pressure. If all this O_2 were converted to ozone (O_3) at the same temperature and pressure, what is the ozone volume (in liters)? 3 O_2(g) → 2 O_3(g)
Answers
Answer:
The volume of ozone produced is 7.53 L.
Explanation:
The reaction is:
3O₂(g) → 2O₃(g) (1)
0.477 mol V=?
11.3 L
From the reaction (1) we have that 3 moles of O₂ produce 2 moles of O₃ so the volume of the ozone produced can be calculated as follows:
\( V_{O_{3}} = V_{O_{2}}*\frac{n_{O_{3}}}{n_{O_{2}}} = 11.3 L*\frac{2}{3} = 7.53 L \)
Therefore, the volume of ozone produced is 7.53 L.
I hope it helps you!
The ozone volume (in liters) is 7.53 L.
The calculation is as follows:
The volume of the ozone in liters should be
\(= 11.3 \times 2\div 3\)
= 7.53L
we have that 3 moles of O₂ produce 2 moles of O₃
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Explain which of the two, triethylammonium chloride ((ch3ch2)3n-hcl) or triethylamine ((ch3ch2)3n) is more soluble in water and why
Answers
Triethylamine ((CH3CH2)3N) is less soluble in water than ((CH3CH2)3N•HCl). Compared to the uncharged N atom in triethylamine, the positive charge on the N atom in triethylammonium chloride is more polar.
What is triethylammonium chloride?If your compound is not susceptible to moisture, you should dissolve it in dichloromethane or chloroform before giving it a brief wash in cold water and separating it. Cold water washing reduces the product's water solubility. Triethylamine and HCl (strong acid) are combined to form the salt triethylammonium chloride (weak base).
Chloroform readily dissolves the salt of triethylamine hydrochloride. To produce 93 grammes of crude using triethylamine hydrochloride salt, chloroform is first removed. In order to get a certain acidic pH, it is dissolved in 250 mL of water, cooled to 10 °C, then acidified by adding 10% hydrochloric acid.
Triethylamine ((CH3CH2)3N) is less soluble in water than ((CH3CH2)3N•HCl). Compared to the uncharged N atom in triethylamine, the positive charge on the N atom in triethylammonium chloride is more polar. Enhanced solubility results from greater interactions with water as a result of this increased polarity.
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Oxidation state of H in BaH2
Answers
Answer:
Hydrogen, H, has an oxidation number of +1 unless it is combined with metals, where it has the oxidation number -1. –Examples – LiH = Li+ H-, BaH2= Ba 2+ H-7. Oxygen usually has the oxidation number -2.
Explanation:
Need this quick to correct my chem quiz, will give brainliest!
ROUND the answer for each problem to the CORRECT number of significant figures.
A: (7.31 × 10^4) + (3.23 × 10^3)
B: (8.54 × 10^-3) - (3.41 × 10^-4)
C: 4.35 dm × 2.34 dm × 7.35 dm
D: 4.78 cm + 3.218 cm + 5.82 cm
E: 38,736 km ÷ 4,784 km
Answers
Answer:
A I did this and got an 100 eazy
Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a liquid?
There is no change in the kinetic energy of the molecules.
The kinetic energy of the molecules increases.
The kinetic energy of the molecules decreases.
The kinetic energy of the molecules increases then decreases.
Answers
Answer:
The kinetic energy of the molecules increases
Explanation:
Because when the water is heated up more kinetic energy is added.
What were the densities of the materials you chose for the walls and floor for the home in Tiny World?
Answers
Answer:
Explanation:
The answer is clay brick
Explanation: the clay brick keeps it cooler also it keeps it firm.
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