A24 liter tank contains ideal helium gas at 27 degrees c anda pressure of 22 atm. how many moles of gas are in the tank?
a) 76
b) 238
c) 17.5
d) 21.5
e) 138

d)21.5 moles

Explanation:

Given that

L = 24 L

T = 27 °C = 300 K

P = 22 atm

We know that ideal gas equation

P V = n R T

P=Pressure ,V= Volume ,n=Moles ,R=Universal gas constant ,T=Temperature

Now by putting the values

22 x 24 = n x 0.08206 x 300

n= 21.447 moles

n= 21.5 moles

Therefore the number of moles will be 21.5 moles.

The answer is "d".

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