Which of these observations are not explained by kinetic-molecular theory? X When a gas is heated, it expands.
o At very low temperatures, gases expand less for a given pressure change than they do at high
temperatures.
If the volume of a gas decreases, its pressure increases at constant temperature,
When gas is added to a rigid container, the pressure inside the container increases
RETRY
Intra

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole

the answer is c.the valence of the atoms combine .