20 POINTS PLEASE HELP THIS IS DUE IN 5 MINUTES

please do not troll or put the wrong answer

Why is there friction between objects

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius