Q15 of 29 Page 85

Calculate the mass of the following

0.5 mole of N2 gas.

0.5 mole of N2 gas


First, we apply the formula:



⇒ Mass of N2 = No. of moles × Molar mas of N2


⇒ Mass of N2 = 0.5 mole × 2(atomic mass of nitrogen)


⇒ Mass of N2 = 0.5 × 2 × 14


⇒ Mass of N2 = 14g


Thus, the mass of N2 gas is 14g.


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