Answer:
0.06 %
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
error = 500 - 499.7 = 0.3
actual volume = 500 mL
We have
![p(\%) = (0.3)/(500) * 100 \\ = (3)/(50) \\](https://img.qammunity.org/2021/formulas/chemistry/college/xkxcdfffj0mnc4p8dcvt0be9wvhq5ys0m3.png)
We have the final answer as
0.06 %
Hope this helps you