Humans need fresh, clean water to survive. Which of these statements is true about fresh water?
A. O An unlimited amount of fresh water is available on Earth.
B. In some places on Earth, fresh water is being used up faster than it can be
replaced
C. The global population is currently decreasing, and people are using less fresh
water
D. O Fresh water was once considered a renewable resource, but today it is
considered an inexhaustible resource.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

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