When 0.2mol of calcium reacts with 880g of water 2.24L of hydrogen gas form at STP How would the amount of hydrogen produced change if the volume of water was decreased to 440mL 400g?

Answers

Answer 1

Answer:

The amount of hydrogen produced does not change if the volume of water was decreased to 440mL 400g.

What is Mole?

The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.

A mole is defined as the amount of substance containing the same number of atoms, molecules, ions, etc. as the number of atoms in a sample of pure 12C weighing exactly 12 g.

The reaction will be;

Ca(s) + 2 H₂O(l) → Ca(OH)₂(aq) + H₂ (g)

Since water is in excess, because 0.1 moles of calcium requires only 0.2 moles of water which is 3.6 g, therefore changing the mass of water used will not affect the amount of hydrogen gas produced since the amount of hydrogen gas produced depends on the amount of calcium used.

Therefore, The amount of hydrogen produced does not change if the volume of water was decreased to 440mL 400g.

Learn more about Moles, here:

brainly.com/question/31597231

#SPJ3

Answer 2

Answer:

Answer:

The volume of hydrogen produced would be the same.

Related Questions

The part of a cell that gives the cell unique characteristics is theA) nucleus. B) vacuole. C) cytoplasm. D) membrane.
A finales del siglo XIX, los estudios y demostraciones que habían sobre los fenómenos eléctricos llevaban a sospechar que los átomos eran divisibles. ¿Cuáles fueron las experiencias realizadas por J.J Thomson para confirmar este hecho y qué postulado surgió de estas experiencias?
Classical biotechnology dates back about _____ years ago. A.100B.1,000C.10,000D.100,000
1. If the temperature of a gas remains constant, then the pressure of the gas will increase if the a. mass of the gas molecules decreases. b. diffusion of the gas molecules increases. c. size of the container is decreased. d. number of gas molecules in the container is decreased. ______ 2. When Gay-Lussac’s law of combining volumes holds, which of the following can be expressed in ratios of small whole numbers? a. pressures before and after reaction b. volumes of gaseous reactants and products c. kelvin temperatures d. molar masses of products and molar masses of reactants ______ 3. Equal volumes of ideal gases at the same temperature and pressure contain equal numbers of a. protons. b. ions. c. particles. d. electrons. ______ 4. At constant temperature and pressure, the volume of a gas is directly proportional to its a. molar mass. b. number of moles. c. density at STP. d. rate of diffusion. ______ 5. To use the ideal gas law to d
_____ is a halogen used in gaseous and liquid form for large scale disinfection of drinking water and sewage. A. Iodine B. Chlorine C. Bromine D. Fluorine E. Betadine

How many protons, neutrons, and electrons could an isotope of this atom contain?

Answers

Explanation:

isotope are atom of the same elements with the same number of protons, electron and different number of neutrons.

Which hydrocarbons are present in styrene?a) alkene
b) alkyne
c) none of the above?

Answers

Option a: alkene

Styren is C6H5CH=CH2, i.e. ethenylbenzene

What’s wrong with the statement gold is heavier than gold

Answers

Answer: Gold can't be heavier than itself.

Explanation: If you have a cookie and a cookie, you can't tell the difference. If you have a big cookie and a small cookie, than the big cookie will weight more.

What kind of bond is in the picture

Answers

Answer:

Ionic Bond

Explanation:

Ionic bonding occurs when there is a significant difference in electronegativity between atoms, resulting in the transfer of electrons. In the case of magnesium (Mg) and oxygen (O), magnesium, with a lower electronegativity, donates two electrons to oxygen, which has a higher electronegativity. This leads to the formation of Mg²⁺ cations and O²⁻ anions. The resulting electrostatic attraction between these oppositely charged ions forms an ionic bond, resulting in the creation of magnesium oxide (MgO), a compound with a crystal lattice structure.

According to VSEPR theory, electrons tend to _____ other electrons.A. repel
B. attract
C. collect
D. produce

Answers

the answer is A " Repel"

Kinetic energy is _____.inversely proportional to mass and velocity
directly proportional to mass and velocity
directly proportional to mass and inversely proportional to velocity
inversely proportional to mass and directly proportional to velocity

Answers

Kinetic energy is DIRECTLY PROPORTIONAL TO MASS AND VELOCITY.

The formula for finding kinetic energy is: KE = MV^2 /2, Where:

KE = Kinetic energy

M = Mass of the object

V = Velocity of the object;

The mathematical relationship given above shows that, kinetic energy is directly proportional to mass and also directly proportional to the square of velocity of an object. This implies that, the higher the mass and the velocity of an object, the higher the kinetic energy that it will possess. The reverse is also true, the lower the mass and the velocity of an object, the lower its kinetic energy.

Kinetic energy is given by, K.E =mv^2/2. So it's directly proportional to mass and velocity.

Other Questions

As the first five elements in Group 15 areconsidered in order of increasing atomic number, first ionization energy (1) decreases (2) increases (3) decreases, then increases (4) increases, then decreases

Which 1-mole sample has the least entropy?(1) Br2(s) at 266 K (3) Br2(l) at 332 K (2) Br2(l) at 266 K (4) Br2(g) at 332 K

Which best describes is the ∆G, ∆H, ∆S and T of a forest fire?

How can we determine if energy was released or absorbed during a reaction?a) Measure the mass of the reaction at the beginning and end b) Measure the temperature of the reaction at the beginning and end c) Measure the volume of the reaction at the beginning and end d) Measure the density of the reaction at the beginning and end