IB
IBO
Chemistry
May 2018
QP-201805-Chemistry-P1(TZ2)-SL · Question 4
Question (excerpt):
4. What is the percentage yield when 2.0 g of ethene, C2H4, is formed from 5.0 g of ethanol, C2H5OH? Mr (ethene) = 28; Mr (ethanol) = 46 A. 2.0 5.0 100 28 46 × × B. 2.0 28 100 5.0 46 × C. 28 5.0 100 2…
4. What is the percentage yield when 2.0 g of ethene, C2H4, is formed from 5.0 g of ethanol, C2H5OH? Mr (ethene) = 28; Mr (ethanol) = 46 A. 2.0 5.0 100 28 46 × × B. 2.0 28 100 5.0 46 × C. 28 5.0 100 2…
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