How many molecules are in 15 grams of Chlorine?
How many moles are in 23 grams of carbon atoms?
Best answer gets 10 points, thank you!
Chemistry help?
2016-12-13 9:55 am
回答 (2)
2016-12-13 10:03 am
Molar mass of Cl₂ = 35.5 × 2 = 71.0 g/mol
No. of moles of Cl₂ in 15 g of Cl₂ = (15 g) / (71.0 g/mol) = 0.211 mol
1 mole of Cl₂ contains 6.022 × 10²³ molecules.
No. of molecles of Cl₂ in 15 g of Cl₂ = (0.211 mol) × (6.022 × 10²³ /mol) = 1.27 × 10²³
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Molar mass of C atoms = 12.0 g/mol
No. of moles in 23 g of C atoms = (23 g) / (12.0 g/mol) = 1.92 mol
No. of moles of Cl₂ in 15 g of Cl₂ = (15 g) / (71.0 g/mol) = 0.211 mol
1 mole of Cl₂ contains 6.022 × 10²³ molecules.
No. of molecles of Cl₂ in 15 g of Cl₂ = (0.211 mol) × (6.022 × 10²³ /mol) = 1.27 × 10²³
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Molar mass of C atoms = 12.0 g/mol
No. of moles in 23 g of C atoms = (23 g) / (12.0 g/mol) = 1.92 mol
2016-12-13 10:54 am
moles = mass / molar mass
molecules = moles x 6.02 x 10^23
moles = mass / molar mass of carbon
molecules = moles x 6.02 x 10^23
moles = mass / molar mass of carbon
收錄日期: 2021-04-18 15:52:49
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