Question

A gas has an initial pressure of 51 kPa with a volume of 1.0 liter and a temperature of 320K What is the temperature of the gas when it has a pressure of 85 kPa and a volume of 2.1 liters

Answer 1

See below

Step-by-step explanation:

Use the combined gas law where:

P₁V₁ P₂V₂

------ = -------- You are looking for T₂.

T₁ T₂

You can either solve the equation above to T₂ now and then plug the number in or you can plug the numbers in now and solve. Do the latter.

(51)(1.0) (85)(2.1)

----------- = ------------

320 T₂

Cross-multiply and you get:

(51)T₂ = (85)(2.1)(320) or T₂ = (85)(2.1)(320) / 51

T₂ = 1120 K