What is the percent yield if 3.74 g of copper is produced when 1.87 g aluminum is reacted with an excess of copper (II) sulfate? 2Al + 3CuSO4 Al2(SO4)3 + 3Cu

Ibelieve its because the stove is a cleaner burning fuel

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

The answer is a a and x i just took the quiz and it was right