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SammyHelpsYou

Molar mass of N2 = 14×2=28g/mol

Moles of N2 =mass/molar mass

Mass of N2 = moles × molar mass

Mass of N2 = 15.7 × 28 = 439.6 kg

melodyconway89

1 mole of nitrogen weighs 28 g

15.7 mol = 15.7 * 28 = 439.6 g

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