Question

Calculate the mass of copper that could be made from 4.0 g of copper oxide

Answer 1

Answer:

Calculate the mass of copper that could be made from 4.0 g of copper oxide is 3.55 g

Explanation:

atomic mass of Cu = 63.545

molecular mass of copper oxide  ($Cu_{2}$O)= 143.09

$C+Cu_{2} O$→$2Cu+CO$

1 mol $Cu_{2} O$ ⇒ 2 mol Cu

143.09 g copper oxide ⇒127.09 g Cu

1 g copper oxide ⇒ $\frac{127.09}{143.09}$g Cu

∴4 g copper oxide gives =$\frac{127.09}{143.09} 4$= 3.55g

so,  3.55 g of copper could be made from 4 g of copper oxide .

Answer 2

Answer:

3.55g

Explanation: