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2 years ago

Two sealed flasks each have a volume of 2.0 liters. Flask A contains N, O gas and Flask B contains H, gas both at 1

Chemistry

1 answer:

barxatty [35]2 years ago

4 0

Answer:

Each gas have same number of molecules.

Explanation:

According to Avogadro law,

Equal volume of all the gases at same temperature and pressure have equal number of molecules.

Mathematical expression:

V ∝ n

V = Kn

V/n = K

k = constant

V = volume of gas

n = number of moles of gas

when volume change is changed from v1 to v2 and number of moles from n1 to n2 this law can be written as,

V1 / n1 = V2 /n2

This state that by increasing the number of moles of gas volume also goes to increase.

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3 years ago

How is stoichiometry used to calculate energy released when a mass of liquid freezes?

kati45 [8]

Answer:

D. Grams liquid x mol/g x delta Hfreezing

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to reason that the stoichiometry used to calculate energy released when a mass of liquid freezes, involves the grams of the liquid, the molar mass of the liquid, as given in all the group choices, and the enthalpy of freezing because that is the process whereby a liquid goes solid.

In such a way, we infer that the correct factor would be D. Grams liquid x mol/g x delta Hfreezing which sometimes is the negative of the enthalpy of fusion as they are contrary processes.

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2 years ago

Read 2 more answers

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Alecsey [184]

Answer:

C) ball rollinflown a hill

Explanation:

The question asks to identify the endothermic process in the list of options. By way of elimination, we have;

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B) formation of copper

This is an exothermic process. Capture of electrons by a cation is always exothermic.

C) ball rollinflown a hill

This is the correct option. Energy is absorbed by the ball as it moves on the hill

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Freezing is an example of exothermic reaction. Heat is given off to the surroundings.

E) oxide from copper and oxygen

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3 years ago

What is the quantity of atoms in KMnO4 ?

tankabanditka [31]

Answer:

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Explanation:

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2 years ago

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Answer:

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2 years ago