ANSWER
The percentage error is 13.04%
EXPLANATION
Given that;
Exact value = 1.15 g/ml
Approximate value = 1.00 g/ml
Follow the steps below to find the percentage error of water
Step 1; Apply the percentage error formula
[tex]\begin{gathered} \text{ Percentage error = }\frac{\text{ approximate value - exact value }}{\text{ exact value}}\times\text{ 100\%} \\ \\ \text{ Percentage error = }\frac{\text{ 1.00 - 1.15}}{\text{ 1.15}}\times\text{ 100\%} \\ \\ \text{ Percentage error = }\frac{\text{ }\lvert{-0.15}\rvert}{\text{ 1.15}}\times\text{ 100\%} \\ \\ \text{ Percentage error = 0.1304 }\times\text{ 100\%} \\ \text{ Percentage error = 13.04 \%} \end{gathered}[/tex]Therefore, the percentage error is 13.04%