Question

Calculate the percent error for the following measurements:

(a) The density of alcohol (ethanol) is found to be 0.8060 g/mL (true value = 0.7980 g/mL).

(b) The mass of gold in an earring is analyzed to be 0.8478 g (true value = 0.8644 g

Step 1

Percent error is often expressed as the absolute value of the difference between the true value and the experimental value, divided by the true value.

Step 2

(a)

Experimental value =0.8060 g/ml density

True value =0.7980 g/ml

Percent error of alcohol can be calculated as

Step 3

(b)

Experimental value =0.8478 g/ml density

True value =0.8644 g/m...

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