Answer:
60.5 L
Step-by-step explanation:
If the gas temperature is constant, we can use Boyle's law:
P1V1 = P2V2
V2 = P1V1 / P2
P1 = 12.7 kPa
V1 = 40.0 L
P2 = 8.4 kPa
V2 = (12.7 kPa) (40.0 L) / (8.4 kPa) = 60.5 L
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