Refer to atomic masses given in the Table (3.2) of this chapter. Calculate the molar masses of each of the following compounds :HCl, NH3, CH4, CO and NaCl
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To find the molar mass, we have to add the masses of atom which is present in the compound.
The mass of molecules of the compounds given in the question are solved below -
1. HCL
Atomic mass of Hydrogen = 1
Atomic Mass (Cl) = 35.5
So,
Molar Mass = 1 + 35.5 = 36.5 g
2. NH3
Mass of atom of N = 14
Mass of H = 1
Molecular Mass = 14 + (1 x 3)
- = 17 g
3. CH4
Mass of C = 12
Mass of H = 1
Molar Mass = 12 + (1 x 4)
- Molar Mass = 12 + (1 x 4) = 16 g
4. CO
Mass of C = 12
Mass of O = 16
Molar Mass = 16 + 12 = 28 g
5. NaCl
Mass of Na = 23
Mass of Cl = 35.5
Molar Mass = 23 + 35.5
- Molar Mass = 23 + 35.5 = 58.5 g
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