C2C6 has molar mass of 30g
A) NO (molar mass 30g)
B) CH4 (16g)
C) N2O3 (76g)
D) Cl2O3 (119g)
At 25 degrees C, C2H6 effuses at a rate of 0.38 mol per minute. Which gas would have a rate of effusion approximately one-half as fast?
2018-01-09 10:20 am
回答 (1)
2018-01-09 10:53 am
✔ 最佳答案
(Effusion rate of the C₂H₆) / (Effusion rate of unknown gas) = √[(Molar mass of unknown gas) / (Molar mass of C₂H₆)]2/1 = √[(Molar mass of unknown gas) / (30 g)]
Molar mass of unknown gas = 120 g
The molar mass of Cl₂O₃ = 119 g ≈ 120 g
The answer: D) Cl₂O₃ (119 g)
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