How many nitrogen atoms are in a 2.51 mol sample of N2O?
回答 (1)
2018-01-23 2:03 pm
Avogadro constant = 6.022 × 10²³ /mol
Number of N₂O molecules = (2.51 mol) × (6.022 × 10²³ N₂O molecules/mol) = 1.51 × 10²⁴ N₂O molecules
Each N₂O molecule contains 2 N atoms.
Number of N atoms = (1.51 × 10²⁴ N₂O molecules) × (2 N atoms/N₂O molecule) = 3.02 × 10²⁴ N atoms (to 3 sig. fig.)
Number of N₂O molecules = (2.51 mol) × (6.022 × 10²³ N₂O molecules/mol) = 1.51 × 10²⁴ N₂O molecules
Each N₂O molecule contains 2 N atoms.
Number of N atoms = (1.51 × 10²⁴ N₂O molecules) × (2 N atoms/N₂O molecule) = 3.02 × 10²⁴ N atoms (to 3 sig. fig.)
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