Question

A sample of oxygen gas weighting8.5 gram at a pressure of 600 mm of Hg occupie a volume of10.5 liter when temperature is 270 Kelvin what is its volume when the temperature is raised to 360 Kelvin at the same pressure

Answer 1

Answer:

Gas constant is the value is 0.0821 L.atm.K−1.mol−1 

applying PV=nRT

n=mass of substance/molecular mass of substance

n=0.5g / molecular mass of gas

Putting values in equation

1×1.12=0.5 g / molecular mass of gas× 0.0821 L.atm.K−1.mol−1×273.15

Molecular mass=1×1.120.5×0.0821×273.15=10.5 g