Answer:
[tex]\boxed{\text{33.8 \%}}[/tex]
Explanation:
[tex]\text{\% yield} = \dfrac{\text{actual yield}}{\text {theoretical yield}} \times\text{100 \%}[/tex]
Data:
Actual yield = 16.8 g
Theoretical yield = 49.7 g
Calculation:
[tex]\text{\% yield} = \dfrac{\text{16.8 g}}{\text {49.7 g}} \times\text{100 \%} = \boxed{\textbf{33.8 \%}}[/tex]