At s t p a certain mass of gas occupies a volume 790cm3 find the temperature at which the gas occupies 100cm3 and has a pressure of 726mmhg .P1V1=P2P2---T1 T2/

Answer 1

PV=kT
So, PV/T = k, which is constant.
That means you want to find T such that
726*100/T = 760*790/273