Doc Inmaking does the “transforming copper” experiment. He first weighs 0.3831 g
ID: 901964 • Letter: D
Question
Doc Inmaking does the “transforming copper” experiment. He first weighs 0.3831 g of copper ribbon. After all the experimental work is finished, he obtains 0.3158 g of copper powder. He calculates two percentage values, 82.4 % and 17.6 %.
Match Doc’s four numerical values with their identities using the correct terminology.
Percent yield
Percent error
Actual yield
No term matches this number
Percent recovery
Theoretical yield
-0.3831 g
-0.3158 g
-82.4%
-17.6%
A.Percent yield
B.Percent error
C.Actual yield
D.No term matches this number
E.Percent recovery
F.Theoretical yield
Explanation / Answer
0.3831 g : This is the Theoretical yield as we are starting from a known weighed material.
0.3158 g : This is the Actual yield obtained in this reaction.
82.4 % : This is the Percent yield.
The formulation is Percent yield = (Actual yield / Theoretical yield) * 100
= (0.3158 g / 0.3831 g) * 100
= 82.4
17.6 % : This is the Percent error.
The formulation is Percent error = (100 - Percent yield)
= (100 - 82.4 )
= 17.6
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