Question

How many grams of $H_{2}O$ can be produced from $5.0$ moles of $H_2$?

• A. $3.6grams$
• B. $5.0grams$
• C. $10grams$
• D. $90grams$

Answer 1

Answer: (D)

$90grams$

$H_2+\frac{1}{2}{O}_2\to H_{2}O$

$2H_2+O_2\to 2H_{2}O$

2moles of $H_2\to$ 36g of $H_{2}O$

5 moles of $H_2\to x$

$x=\frac{5\times 36}{2}=90g$

5 moles of $H_2$ produces 90 g of $H_{2}O$.