Part A : V2 = 2.40 L
Explanation
According to Boyle's law, volume of an ideal gas is inversely proportional to it's volume.
Mathematically, P1 * V1 = P2 * V2
where P1 = initial pressure = 752 torr
V1 = initial volume = 12.0 L
P2 = final pressure = 3760 torr
V2 = final volume
V2 = V1 * (P1 / P2)
Substituting the values,
V2 = (12.0 L) * (752 torr / 3760 torr)
V2 = (12.0 L) * (0.2)
V2 = 2.40 L
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