Calculate the number of atoms in each of the following:
(i) 52 moles of Ar
(ii) 52 u of He
(iii) 52 g of He

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Solution

(i) The number of atoms present in 52 mol of Ar are $52 \times 6.023 \times 10^{23} = 3.13 \times 10^{25}$ atoms.

(ii) 52 u of He will contain $\frac{52}{4} = 13$ atoms (as atomic mass of He is 4 amu).

(iii) 52 g of He will contain $\frac{52}{4} \times 6.023 \times 10^{23} = 7.82 \times 10^{24}$ atoms.

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Similar questions

Calculate the number of atoms in each of the following (i) 52 moles of Ar (ii) 52 u of He (iii) 52 g of He.

Calculate the number of atoms in each of the following :
(a) 52 moles of He,
(b) 52 Amu of He,
(c) 52 g Of He.

52 moles of Ar

52 u of He

52 g of He

Calculate the number of atoms in 52u of He

52

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