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A closed cylinder contains 40 g of SO3 a...

A closed cylinder contains 40 g of `SO_3` and 4 g of helium gas at 375 K. If the partial pressure of helium gas is 2.5 atm, then the volume of the container is (R = 0.082 L-atm `K^-1` `mol^-1`)

A

8.3L

B

2.5L

C

15.5L

D

12.3L

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The correct Answer is:
D
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