Question

In lab, you calculate the density of an iron rod to be 7.30 g/cm3. The accepted value
for the density of iron is 7.80 g/cm3. What is your percent error?

Answer 1

Answer:

6.41 %

Explanation:

The percentage error of a certain measurement can be found by using the formula

$P(\%) = \frac{error}{actual \: \: number} \times 100\%$

From the question

actual density = 7.80 g/cm³

error = 7.30 - 7.80 = 0.5

We have

$p(\%) = \frac{0.5}{7.8} \times 100 \\ = 6.410256...$

We have the final answer as

6.41 %

Hope this helps you