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Zanzabum
3 years ago
8

Calculate the volume of 2.5×10-4 moles of h2

Chemistry
1 answer:
sattari [20]3 years ago
3 0
At STP : volume is 22.4 L

1 mole H₂ -------------> 22.4 L
2.5 x 10⁻⁴ moles -----> ?

v = 2.5 x 10⁻⁴ * 22.4 / 1

v = 
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2. Calculate the mass of 3.47x1023 gold atoms.
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3.47 x 10^{23} atoms of gold have mass of 113.44 grams.

Explanation:

Data given:

number of atoms of gold = 3.47 x 10^{23}

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from the relation,

1 mole of element contains 6.022 x 10^{23} atoms.

so no of moles of gold given = \frac{3.47 X 10^{23}  }{6.022 X 10^{23} }

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