Question

14. After a sample of xenon with a volume of 0.532 L was heated from 22.0°C to 86.0°C, its volume changed to 587 mL

and its pressure became 789 torr. What must have been its initial pressure in atmospheres?

Answer 1

Answer: P1 = 756 torr

P2 = 499 torr

V2 = 789 mL

V1 = ?

applying Boyle's Law

P1 * V1 = P2 * V2

756 torr * V1 = 499 torr * 789 mL

V1 = 499 torr * 789 mL / 756 torr

V1 = 520.78 mL

hope this helps!