In an experiment, mixing baking soda and vinegar produced a combination of salty water and carbon dioxide shown in the following graph. What is the combined mass of the baking soda and vinegar before mixing? (1 point)

A. 35 grams

B. 55 grams

C. 450 grams

D. 45 grams

since electrons are negative the answer is neagtaive

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