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| 1. |
The number of atoms in 4.25g of NH3 is approximately? |
| Answer» Molar mass NH3 = 14+3 = 17g/mol 4.25g = 4.25/17 = 0.25 mol NH3 1mol = 6.022*10^23 molecules 0.25 mol = 0.25*6.022*10^23 Number of molecules = 1.51*10^23 molecules NH3 | |