Three sections of the periodic table are labeled A, B, and C in the image below. A representation of the periodic table is shown. The cells of the periodic table are left blank. A zig zag section of the periodic table is shaded gray. This section is labeled B. The section on the right of this gray shaded section is labeled C and the section on the left of this gray shaded section is labeled A.

Which of the following statements is most likely true for an element present in section B?

it means there are 3 atoms of oxygen

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