If 72.0 grams of aluminum are reacted with 252 grams of hydrochloric acid, what is the mass of the excess reactant leftover after the reaction has reached completion? 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)

a - 9.84 g
b - 55.3g
c - 72.4g
d - 180g

your answer is c) plasma

~*"auba14"*~

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

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