11) What is the volume of 4.92 grams of hydrogen gas at STP? (Show the work using dimensional analysis)

Chemistry

1 answer:

lorasvet [3.4K]3 years ago

4 0

Answer:

The volume of 4.92 grams of hydrogen gas at STP is 9.105 litter.

Explanation:

We know that, the molecular weight of hydrogen gas $(H_{2} )$ = $1\times 2 = 2$ .

Moles of hydrogen gas = $\frac{weight}{molecular weight} = \frac{4.92}{2} = 2.46$ moles.

At STP, 1 mole of hydrogen gas = occupies 22.4 litter

So, 2.46 mole of hydrogen gas = occupies $\frac{22.4}{2.46} = 9.105$ litter.

Hence, the volume of 2.46 grams of hydrogen gas at STP is 9.105 litter.

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