Calculate the mass of the following substance: a) 2.5 x 10^23 molecules of N2

Avogrado's constant = 6.02214086 × 1023 mol-1 2.5/6.02=0.415 Ar of N = 14 Mr of N2 = 28 28 x 0.415=11.62

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Answered by Kishan P. Chemistry tutor

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