Question

question 3. in a chemistry lab, students were asked to measure the density of a substance. the accepted or true density of the substance is 8.95 g/ml. the students obtained the following experimental results: calculate the percent error for each trial and express it as a percentage. round all answers to two decimal places and do not forget to include the % symbol. percent error for trial 1: percent error for trial 2: percent error for trial 3:

Explanation:

Step1: Formula for percent error

The formula for percent error is \( \text{Percent Error}=\frac{\vert\text{Experimental Value}-\text{True Value}\vert}{\text{True Value}}\times100\%\)

Step2: Percent error for Trial 1

The experimental value for Trial 1 is \(8.78\ g/mL\) and the true value is \(8.95\ g/mL\)

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Step3: Percent error for Trial 2

The experimental value for Trial 2 is \(8.93\ g/mL\) and the true value is \(8.95\ g/mL\)

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Step4: Percent error for Trial 3

The experimental value for Trial 3 is \(8.85\ g/mL\) and the true value is \(8.95\ g/mL\)

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Answer:

Percent Error for Trial 1: \(1.90\%\)
Percent Error for Trial 2: \(0.22\%\)
Percent Error for Trial 3: \(1.12\%\)