A small rock lies on a slope near a tropical sea. What are three ways that the rock could be eroded? A. During a rockfall, the rock could be carried down the slope.
B. Frost wedging could cause cracks in the rocks.
C. The heat of the sun could break down the rock.
D. Tall, powerful waves could carry the rock into the ocean.
E. The rock could react to seawater, break down, and be carried away by the sea.

l dont know l am s sorry

you didnt put any of the following

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