Question

a student calculated that the theoretical yield would be 200. g of copper but when he performed the experiment he only collected 180. grams.
what was the percent of yield from his experiment?
20.0 %
80.0 %
90.0 %

1. %

Explanation:

Step1: Recall the formula for percent yield

Percent yield = $\frac{\text{Actual Yield}}{\text{Theoretical Yield}}\times100\%$

Step2: Substitute the given values

Actual yield = 180 g, Theoretical yield = 200 g.
Percent yield = $\frac{180}{200}\times100\%$

Step3: Calculate the value

$\frac{180}{200}= 0.9$, and $0.9\times100\% = 90.0\%$

Answer:

C. 90.0 %