Question

Answer both questions with explanation and answer will give brain list

Answer 1

Answer: 10.  39.7 g $CH_3OH$

11. 650 g of $HgO$

Explanation:

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

a) moles of $H_2$

$\text{Number of moles}=\frac{5.0g}{2.0g/mol}=2.5moles$

$CO(g)+2H_2(g)\rightarrow CH_3OH(l)$

According to stoichiometry :

2 moles of $H_2$ produce = 1 mole of $CH_3OH$

Thus 2.5 moles of  $H_2$ produce=$\frac{1}{2}\times 2.5=1.25moles$  of $CH_3OH$

Mass of $CH_3OH=moles\times {\text {Molar mass}}=1.25moles\times 32g/mol=39.7g$

Thus 39.7 g of $CH_3OH$ will be produced from 5.0 g of hydrogen.

11. $2HgO(s)\rightarrow 2Hg(l)+O_2(g)$

According to stoichiometry :

1 mole of $O_2$ is produced by = 2 moles of $HgO$

Thus 1.50 moles of  $O_2$ are produced by =$\frac{2}{1}\times 1.50=3moles$  of $HgO$

Mass of $HgO=moles\times {\text {Molar mass}}=3moles\times 216g/mol=650g$

Thus 650 g of $HgO$ woukd be decomposed to produce 1.5 mol of oxygen