**A handbook gives the density of calcium as 1.54 g/cm3. Based on lab measurements, what is the percentage error of a density calculation of 1.25 g/cm3?**

**Answer:**

**A handbook gives the density of calcium as 1.54 g/cm3. Based on lab measurements, what is the percentage error of a density calculation of 1.25 g/cm3?**

**Answer:**