Which is an advantage of selling plant fertilizer as a powder rather than as a liquid? Choose one.
A. The powder must be stored in a childproof container.

B. Transportation costs are reduced.

C. The powder may be a health hazard if proper procedures are not followed during mixing.

D. The gardener has to be able to read directions carefully and mix the proper amount of solvent and solute.

A

Explanation: because i saw the sheet

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