A 240-L Tank Contains Ideal Helium Gas At At 27 $27 ^ { \circ } \mathrm { C }$

Multiple Choice

A 24.0-L tank contains ideal helium gas at $27 ^ { \circ } \mathrm { C }$ and a pressure of 22.0 atm. How many moles of gas are in the tank? $( R = 8.31 \mathrm {~J} / \mathrm { mol } \cdot \mathrm { K } , 1 \mathrm {~atm} = 101 \mathrm { kPa } )$

A) 138 mol
B) 17.5 mol
C) 21.4 mol
D) 76.0 mol
E) 238 mol