A helium cylinder in which the volume of gas =2.24 ~L at STP ( 1...

A helium cylinder in which the volume of gas

=2.24 \mathrm{~L}

at STP (

1 \mathrm{~atm}, 273 \mathrm{~K}

) developed a leak and when the leak was plugged the pressure in the cylinder was seen to have dropped to 550 mm of Hg . The number of moles of He gas that had escaped due to this leak is

Options

A $0.028$
B $0.072$
C $0.972$
D $0.099$

Correct answer

A. $0.028$

Step-by-step solution

No Solution

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