How is molecular mass of a substance calculated? Give example.

1.	How is molecular mass of a substance calculated? Give example.
Answer» Molecular mass is calculated by multiplying average atomic mass of each element by the number of its atoms and adding them together. e.g., Molecular mass of carbon dioxide (CO₂) is calculated as follows : Molecular mass of CO₂ = (1 × average atomic mass of C) + (2 × average atomic mass of O) = (1 × 12.0 u) + (2 × 16.0 u) = 44.0 u

Answer»

Molecular mass is calculated by multiplying average atomic mass of each element by the number of its atoms and adding them together.

e.g.,

Molecular mass of carbon dioxide (CO₂) is calculated as follows :

Molecular mass of CO₂ = (1 × average atomic mass of C) + (2 × average atomic mass of O)

= (1 × 12.0 u) + (2 × 16.0 u)

= 44.0 u

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