Question

(c) ph
ΒΑς
18. A gas cylinder, can hold 1 kg of hydrogen at room
temperature and pressure. (a) What mass of carbon
dioxide can it hold under similar conditions of temperature
and pressure? (b) If the number of molecules of hydrogen
in the cylinder is X, calculate the number of carbon
dioxide molecules in the cylinder. State the law that helped
you to arrive at the above result.
(2017)
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Answer 1

Answer:

Here temperature , pressure and volume ( cylinder) all are constant .

so , number of mole must be constant .

mole of hydrogen gas = given wt/molar wt = 1000/2 = 500 mole .

mole of carbon dioxide = given wt/molar wt

500 = given wt/44

given wt = 500×44 = 22 kg

b) here number of moles are constant

so, no of molecules also constant becoz

no of molecules = mole ×avogadro's constant

so, number of molecules of carbon dioxide are also equal to X

. hope this will help you.

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