Question

A handbook gives the density of calcium as

1.67 g/cm³.
What is the percent error of a density cal-
culation of 1.23 g/cm³ based on lab measure-
ments?
Answer in units of %.

Answer 1

To calculate the percent error, we can use the formula:

Percent Error = [(Experimental Value - Accepted Value) / Accepted Value] * 100

In this case, the experimental value is 1.23 g/cm³ and the accepted value is 1.67 g/cm³. Let's plug these values into the formula:

Percent Error = [(1.23 - 1.67) / 1.67] * 100

Percent Error = (-0.44 / 1.67) * 100

Percent Error ≈ -26.35%

The percent error of the density calculation is approximately -26.35%.