Question

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Answer 1

Explanation:

Molecular Mass of -

• H2 = 1 × 2 = 2 u

• O2 = 16 × 2 = 32 u

• Cl2 = 35.5 × 2 = 71 u

• CO2 = 12 + 16 × 2 = 44 u

• CH4 = 12 + 1 × 4 = 16 u

• C2H6 = 12 × 2 + 1 × 6 = 30 u

• C2H4 = 12 × 2 + 1 × 4 = 28 u

• NH3 = 14 + 1 × 3 = 17 u

• CH3OH = 12 + 1 × 3 + 16 + 1 = 32 u

Formula Unit Mass of -

• ZnO = 65 + 16 = 81 u

• Na2O = 23 × 2 + 16 = 62 u

• K2CO3 = 39 × 2 + 12 + 16 × 3 = 138 u