Q.

If 40 L of a gas is stored under a pressure of 150 atm at 300 K. How many moles of the gas are present in the cylinder?

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a

264 mol

b

244 mol

c

225 mol

d

2.5 mol

answer is B.

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Detailed Solution

According to ideal gas law,pV=nRT,p=150 atm,V=40 L,T=300 Kn=pVRT=150×400.082×300=243.9≈244 mol
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If 40 L of a gas is stored under a pressure of 150 atm at 300 K. How many moles of the gas are present in the cylinder?