Charles’s Law chem

Question

A sample of krypton gas at a pressure of 775 mm Hg and a temperature of 25 °C, occupies a volume of 6.29 liters. If the gas is cooled at constant pressure to a temperature of -6 °C, the volume of the gas sample will be ________ L.

A sample of nitrogen gas at a pressure of 0.561 atm and a temperature of 234 °C, occupies a volume of 624 mL. If the gas is cooled at constant pressure until its volume is 502 mL, the temperature of the gas sample will be _____________ °C.

Answer 1

Charles' Law

V1/T1 = V2/T2 pressure is constant

V1 = 6.29 L

T1 = 25 + 273 = 298K

V2 = ?

T2 = -6 + 273 = 267K

6.29/298 = V2/267

V2 = 5.64 L

V1/T1 = V2/T2

V1 = 624 ml

T1 =234 + 273 = 516K

V2 = 502 ml

T2 = ?

Plug in the numbers and solve for T2