Chemistry
Grade-8
Easy
Question
The molecular mass of Nitrogen molecule is ________.
- 30
- 44
- 28
- 20
Hint:
Molecular mass is the number equal to the sum of the atomic masses of the atoms in the molecule
The correct answer is: 28
Molecular mass is the number equal to the sum of the atomic masses of the atoms in the molecule. The molecular mass gives the mass of the molecule relative to the mass of the 12C atom whose mass is assumed to be 12.
The molecular atom of Nitrogen = 2x 14= 28g
As there are two atoms therefore the atomic mass is multiplied by 2.
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