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boyakko [2]
2 years ago
14

A compound is found to have an empirical formula of CH2O. If its molecular mass is 60.0 g/mol, what is its molecular formula?

Chemistry
1 answer:
Lina20 [59]2 years ago
3 0
Empirical=12.01+2.02+16=30.03
Molecular=60
Molecular/Empirical=2
so, 2(CH2O)
C2H4O2
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Answer:

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Mass of the sample = 1.45 g

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Mass of the precipitate = 0.107 g

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According to reaction, 2 moles of aluminum hydroxide is obtained from 1 mole of aluminum sulfate .

Then 0.001372 moles of aluminum hydroxide will be obtained from:

\frac{1}{2}\times 0.001372 mol=0.000686 mol

Mass of 0.000686 moles of aluminum sulfate :

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The mass percent of aluminum sulfate in the sample:

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<h2>~<u>Solution</u> :-</h2>
  • Here, to find the atomic mass of element, we must;

We know that,

  • 4.6 x $ \sf{10^{22}}$ atoms of an element weigh 13.8g.

Thus,

The atoms of $ \sf{ 6.02 \times 10^{13}}$ will weigh;

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2 years ago
Read 2 more answers
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