calculating percentage error

A student measures the density of a liquid as 1.32 g/cm³, while the true density is 1.25 g/cm³. What is the percentage error in the student's measurement?

• 5.6%

• 5.0%

• 4.8%

• 6.0%

A thermometer reads 75.8°C, but the actual temperature is 78.0°C. What is the percentage error in the thermometer reading?

• 2.8%
  

• 3.0%

• 2.5%

• 3.5%

A student measures the volume of a solution as 50.0 mL, but the true volume is 52.0 mL. What is the percentage error in the volume measurement?

• 3.85%
  

• 4.00%

• 3.70%

• 3.98%

A student determines the mass of a substance to be 15.0 grams, while the true mass is 14.7 grams. What is the percentage error in the mass measurement?

• 2.0%
  

• 1.8%

• 2.9%

• 1.5%

A scientist measures the concentration of a solution as 0.078 M, while the true concentration is 0.080 M. What is the percentage error in the concentration measurement?

• 2.5%

• 3.0%

• 2.7%

• 3.5%