Calculate the mass of 2.63 x 1014 molecules of C12H22O11.?
回答 (1)
2017-07-25 2:19 pm
Avogadro constant = 6.02 × 10²³ / mol
No. of moles of C₁₂H₂₂O₁₁ = (2.63 × 10¹⁴) / (6.02 × 10²³ / mol) = 4.37 × 10⁻¹⁰ mol
Molar mass of C₁₂H₂₂O₁₁ = (12.0×12 + 1.0×22 + 16.0×11) g/mol = 342 g/mol
Mass of C₁₂H₂₂O₁₁ = (4.37 × 10⁻¹⁰ mol) × (342 g/mol) = 1.49 × 10⁻⁷ g
No. of moles of C₁₂H₂₂O₁₁ = (2.63 × 10¹⁴) / (6.02 × 10²³ / mol) = 4.37 × 10⁻¹⁰ mol
Molar mass of C₁₂H₂₂O₁₁ = (12.0×12 + 1.0×22 + 16.0×11) g/mol = 342 g/mol
Mass of C₁₂H₂₂O₁₁ = (4.37 × 10⁻¹⁰ mol) × (342 g/mol) = 1.49 × 10⁻⁷ g
收錄日期: 2021-05-01 14:15:23
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