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2015-06-03T18:34:02+05:30

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Molar mass of N2O = 44 g Number of moles of N2O in 44 g = 1 Number of moles of N2O in 1g of N2O = 1 / 44 Number of moles of N2O in 200 mg or 200 × 10-3 g of N2O = 200 × 10-3 / 44 = 4.545 × 10-3 moles Number of moles of N2O left = 2.89 × 10-3 moles……(Given) Total Number of moles of N2O = 4.545 × 10-3 moles Number of moles removed of N2O = 4.545 × 10-3 – 2.89 × 10-3 = 1.655 × 10-3 moles 1 mole of N2O = 6.022 × 1023 molecules of N2O 1.655 × 10-3 moles of N2O = 1.655 × 10-3 × 6.022 × 1023 molecules of N2O = 9.96 × 1020 molecules of N2O
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