How many moles of helium gas will occupy 22.4 L volume at $0^{o} C$ and at 1 atm pressure?

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0.5 mol

1.0 mol

1.5 mol

2.1 mol

answer is A.

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Detailed Solution

Concept- We know that the expression for the ideal gas law is as follows:

PV = nRT

Where P is pressure, V is volume , n is moles of gas, R is universal gas constant and T is temperature.
Now, using the ideal gas law, the moles of helium gas can be calculated.
P = 1 atm
V = 22.4 L
T =

0^{o}

C
Thus, moles of helium gas are calculated as-
Question Image

Thus, the number of moles of helium gas at 22.4 L volume, 0∘C and 1 atm pressure is 1 mol.
Hence, the correct option is (1).

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