Answer:
The answer is 8.29 %
Step-by-step explanation:
The percentage error of a certain measurement can be found by using the formula
![P(\%) = (error)/(actual \: \: number) * 100\% \\](https://img.qammunity.org/2021/formulas/chemistry/high-school/q0zosffwg85xn9jdfzfbo353sezuv4qp22.png)
From the question
actual density = 19.30g/L
error = 20.9 - 19.3 = 1.6
We have
![p(\%) = (1.6)/(19.3) * 100 \\ = 8.290155440...](https://img.qammunity.org/2021/formulas/chemistry/college/9q3bxhriaz0o6e2f0644f79oc3zn9tijyr.png)
We have the final answer as
8.29 %
Hope this helps you