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Question
Which has more number of atoms?
100g of N2 or 100 g of NH3
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Solution
(i) 100 g of N2 = `100/28`moles
Number of molecules = `100/28 xx 6.022 xx 10^23` molecules
Number of atoms = `(2 xx 100)/28 xx 6.022 xx 10^23` atoms
= 43.01 × 1023 atoms
(ii) 100 g of NH3 = `100/17` moles
Number of molecules = `100/17 xx 6.022 xx 10^23` molecules
Number of atoms = `100/17 xx 6.022 xx 10^23 xx 4` atoms
= 141.69 × 1023 atoms
Hence, NH3 would have more atoms
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