To calculate the number of moles in 21gram of nittogen gas
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Hi there,
◇ Nitrogen gas molecule is diatomic (N2)
◇ Molecular mass = 14 ×2 = 28 gmm
◇ Sample mass = 21 g
◇ Moles = sample mass ÷ molar mass
☆ 21 ÷ 28 = 0.75 mol
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