Chemistry Math Review

A scientist estimated that a procedure would yield 150g of product, but the experiment actually produced 165g. What was the percent error in the scientist's estimate?

• 9%

• 10%

• 11%

• 15%

• 2.86%

• 2.94%

• 3.00%

• 3.14%

During a lab, a thermometer was read as 102°F, but the actual temperature was 100°F. What is the percent error of the thermometer reading?

• 1%

• 2%

• 2.5%

• 3%

A baker calculated that she would need 2.5 kg of flour for a recipe, but she actually needed 2.75 kg. What was the percent error in her calculation?

• 9.09%

• 10%

• 10.91%

• 11.11%

A map indicates that the distance between two towns is 120 miles, but the actual distance is 130 miles. What is the percent error?

• 7.69%

• 8.33%

• 8.57%

• 9.23%

A scale shows a person's weight as 150 pounds, but their actual weight is 145 pounds. Calculate the percent error of the scale.

• 3.33%

• 3.45%

• 3.57%

• 3.67%

A chemistry student calculated the concentration of a solution to be 0.5 M, but the actual concentration was found to be 0.45 M. What is the percent error of the student's calculation?

• 10%

• 11.11%

• 11.67%

• 12.22%

In a physics experiment, the speed of sound was measured at 345 m/s, whereas the accepted value is 340 m/s. What is the percent error of this measurement?

• 1.47%

• 1.52%

• 1.56%

• 1.61%

A grocery store's scale reads 2.05 kg for a bag of potatoes, but the actual weight is 2.00 kg. What is the percent error of the scale's reading?

• 2.5%

• 2.55%

• 2.75%

• 3%

A student estimated the height of a building to be 50 meters, but the actual height was 48 meters. What is the percent error of the student's estimate?

• 4%

• 4.17%

• 4.35%

• 4.5%