Question

Calculate the mass of 500 ml of O2 at 27°C and 740 mm of Hg

Answer 1

Answer:

The volume (V) occupied by n moles of any gas has a pressure (P) at temperature (T). The relationship for these variables will be,

PV = nRT, where R is the gas constant.

By applying the mathematical formula of ideal gas law or equation of state ,we get that.

n = PV/RT

  =(740/760)0.5/(0.0821×300)

  =0.02

So,

mass =number of moles × molecular mass O2 = 0.02×32

                                                                            =0.64 g

So the answer will be 0.64 gm,by using the ideal gas law.