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Given,
Number of molecules = 1 x 10^22 molecules
Molecular mass of CuSO4.5H2O = 249.72g/mol
We know that,
1 mole of CuSO4.5H2O contains 6.023 x 10^23 molecules
Therefore,
6.023 x 10^23 molecules have a mass of 249.72g
Hence,
Weight of 1 × 10^22 molecules =
(249.72/6.023 ×10^23)× 1 × 10^22 = 4.146 g
Number of molecules = 1 x 10^22 molecules
Molecular mass of CuSO4.5H2O = 249.72g/mol
We know that,
1 mole of CuSO4.5H2O contains 6.023 x 10^23 molecules
Therefore,
6.023 x 10^23 molecules have a mass of 249.72g
Hence,
Weight of 1 × 10^22 molecules =
(249.72/6.023 ×10^23)× 1 × 10^22 = 4.146 g
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