Question

In chemistry class, Bob recorded the volume of a liquid as 17.7 mL. The actual volume was 17.1 mL. Use the formula to find percent error of Bob's measurement to the nearest tenth of a percent.

Percent Error =
|Experimental Value − Actual Value|
Actual Value
× 100

Answer 1

For Bob's recorded volume of 17.7 mL and an actual volume of 17.1 mL, the percent error is approximately 3.5%.

Step-by-step explanation:

Percent Error Calculation:

To calculate the percent error, we use the formula:

Percent Error = |Experimental Value - Actual Value| / Actual Value x 100

In this case, Bob's recorded volume is 17.7 mL and the actual volume is 17.1 mL.

Substituting these values into the formula, we get:

Percent Error = |17.7 mL - 17.1 mL| / 17.1 mL x 100

Calculating the numerator we get:

= 0.6 mL

Then, substituting this and the denominator into the formula, we get:

Percent Error = 0.6 mL / 17.1 mL x 100

= 3.51%

Rounding the percent error to the nearest tenth, we get:

Percent Error ≈ 3.5%