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| 1. |
Calculate the number of molecules in 20 g aluminum sulphate |
| Answer» Molar mass of Al2(SO4) 3 = 2(27) + (32 + 64) 3 = 54 + 288 = 342 g. //No of molecules = (20/342) × 6.02 × 10^23 = 0.352 × 10^23 molecules// | |