gas laws

At constant pressure, the ratio between the volume expansion of a mole of gas with a high Cp to that of a mole of gas with a low Cp for a given heat input will be a) greater than 1 b) less than 1 c) equal to 1 equations given: Q= nCp delta T equations that come to mind: since Pressure and...

an open ended mercury barometer has a height of 205 mm with the injection of a gas at 565 mmhg. The liquid in the arm, which is exposed to the air, has a height of 45 mm at the same temperature. What is the atmospheric pressure in torr? Thank you in advance for all responses :)