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VashaNatasha [74]
3 years ago
14

Convert 6.33×10−6 cg to nanograms.

Chemistry
1 answer:
tensa zangetsu [6.8K]3 years ago
5 0
5.73e+8 hope this help
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11) What is the volume of 4.92 grams of hydrogen gas at STP? (Show the work using dimensional analysis)
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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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