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  3. Chemistry for Today General Organic and Biochemistry Hybrid
  4. Quiz 5: Chemical Reactions

A Percentage Yield Less Than 100% Is Often Obtained in a Reaction.what

Question 47
Multiple Choice

A percentage yield less than 100% is often obtained in a reaction.What is(are)the reason for obtaining less than theoretically predicted? A)Side reactions occurred B)poor laboratory technique C)reaction did not go to completion D)all of the choices

Related questions
Q 48
A percentage yield greater than 100% has been reported in a scientific paper you are assigned to read.What would be a reasonable explanation for this? A)A lack of training of the professor who published the study. B)The product was measured more than once. C)Small measurement errors could have caused this to occur. D)It must be a typographical error since yields can't exceed 100%.
Q 49
Which of the following types of chemical reaction classes always involve oxidation? A)single replacement B)double replacement C)combination D)decomposition
Q 50
When the following equation is balanced,how many oxygen atoms are present on the reactant side of the equation? C2H6 + O2  CO2 + H2O A)14 B)7 C)3 D)20
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