Q15 of 29 Page 85

Calculate the mass of the following

0.5 mole of N atoms.

0.5 mole of Natoms


First, we apply the formula:



⇒ Mass of Natoms = No. of moles × Molar mass of N


⇒ Mass of Natoms = 0.5 mole × (atomic mass of nitrogen)


⇒ Mass of Natoms = 0.5 × 14


⇒ Mass of N2 = 7g


Thus, the mass of N atoms is 7g.


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