1.

Calculte the number of molecules present in 4.4 g of CO2[At Mass: C = 12 u, O = 16 u, NA = 6.02 × 1023 mol-1]

Answer»

1 mole of CO2 = 6.023 × 1023 molecules
44 g = 6.023 × 1023 molecules
Hence, 4.4 g = 6.023 × 1022 molecules



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