Nate drops a penny into a fountain at the mall. it falls from his hand straight down into the fountain. describe what the free body diagram would look like as the penny falls. pick all that are true. a) the arrow pointing down would be longer than the arrow pointing up. b) the arrow pointing up would be longer than the arrow pointing down. c) the arrow pointing left would be the same size as the one pointing to the right. d) the arrow pointing left would be longer than the arrow pointing right.

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