A sample of gas occupies 175mL at 10.0C. What volume in mL will the gas have at 20.0C and 750mm Hg?
According to the gas law:
p1V1/T1 = p2V2/T2
where p1 - initial pressure, V1 - initial volume, T1 - initial temperature (10.0 °C = 283.15 K), p2 - final pressure, V2 - final volume, T2 - final temperature (20.0 °C = 293.15 K).
If the pressure is not changed:
V1/T1 = V2/T2
V2 = V1T2/T1 = 175 mL × 293.15 K / 283.15 K = 181.2 mL
Answer: 181.2 mL