Answer to Question #105665 in General Chemistry for Zanaria Aivie Mubas

Question

When MoO3 and Zn are heated together they react: 3Zn(s) + 2MoO3(s) > Mo203(s) + 3ZnO(s) what mass of ZnO is formed when 20.0g MoO3 reacted with 10.0g of Zn?

Answer 1

As we compare the masses we see that MoO3 is in excess

So we use Zn mass for calculations:

m (ZnO) = 81.39*10.0/65.39 = 12.4 g