Question

A gas sample had an inknown pressure with a temperature of 42 degrees Celsius. The same gas has a pressure of 2.83 atm when the temperature is -18 degrees Celsius, with no change in volume or amount of gas. What is the initial pressure, in atm, of the gas?

Agas sample has a unknown pressure with a temperature of 42°C. The same gas has a pressure of 2.83 atm when the temperature is -18°C with no change in the volume or amount of gas Part A What was the initial pressure, in atmospheres of the gas? Express your answer to three significant figures and include the appropriate units Valne Submit Request

Answer 1

f om jideal gat quation (PV=n RT Know we P2VZ Ti it voluma (v,= V Changa in no Now Ginon = 213 +42 = 3 15K ini tial heRswre T2= -18°C = 213-18 255 K 2.83 atm 2.83 atm 255K 315 K 315X 2.83 255 P- 3.49588 atm P 3.50 atm