Question

xvi) If the molar mass of a compound is 90 g/mole, the number of its moles containing 3.011 x 10^23 molecules will be:?

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Answer 1

Explanation:

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Answer 2

Answer:

3.011 × 10²³ molecules of the compound is containing 0.5 moles and 45g mass of the compound.

Explanation:

We have given, the molar mass of the compound = 90 g/mol

As we know that the molar mass is equal to one mole of the compound and the one mole of any compound contains 6.023 × 10²³ molecules.

6.023 × 10²³ molecules of the compound contains =  1 mole

3.011 × 10²³ molecules of the compound  will have number of moles:-

$=\frac{3.011\times 10^{23}}{6.023\times 10^{23}}$

$=0.499$ ≈ 0.5 moles

The mass of one mole of the compound = 90g

The mass of 0.5 mole of the compound = 90 × 0.5 = 45g

Therefore, the number of moles of compound is equal to 0.5 moles.

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