Question

Given the balanced equation, calculate the mass of product that can be prepared from 3.00 g of zinc metal.
2Zn(s)+O2(g)→2ZnO(s)
Express your answer with the appropriate units.

Answer 1

$n = m/M$

$M(Zn) = 65g/mol$

From the equation it follows that $n(Zn)= n(ZnO) = 3/65\ mol$

$m = n*M$

$M(ZnO)= 81g/mol$

$m(ZnO) = 81 * 3/65 g \approx 3.7385g$

Answer: $m(ZnO)= 3.7385g$