Why is a molecule of co2 nonpolar even though the bonds between the carbon atom and the oxygen atoms are polar?
(1) the shape of the co2 molecule is symmetrical.
(2) the shape of the co2 molecule is asymmetrical.
(3) the co2 molecule has a deficiency of electrons.
(4) the co2 molecule has an excess of electrons.

answer: they produce more slow than unicellular organisms.

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