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Stoichiometry

How many gram...

Question

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

3.6 g r a m s

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5.0 g r a m s

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10 g r a m s

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90 g r a m s

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Solution

The correct option is A $90 g r a m s$
$H_{2} + \frac{1}{2} O_{2} \to H_{2} O$

$2 H_{2} + O_{2} \to 2 H_{2} O$

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

5 moles of $H_{2} \to x$

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

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

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