Mastering Measurements and Calculations

Americans drink 5,604,000 gallons of sweet tea each day. How many liters is that? (1 gal = 3.79 L) Leave answer to 4 significant figures.

• 21,200,000 L

• 21,240,000 L

• 21,239160

• 21,000,000 L

How many significant figures are in the number 0.004560?

• 3

• 4

• 5

• 6

Which of the following numbers is correctly expressed in scientific notation?

• 0.45 x 10^3

• 4.5 x 10^2

• 45 x 10^1

• 450 x 10^0

Convert 5 kilometers to meters using dimensional analysis.

• 50 meters

• 500 meters

• 5000 meters

• 50000 meters

Calculate the percent error if the experimental value is 8.5 and the accepted value is 9.0.

• 5.56%

• 5.88%

• 6.25%

• 6.67%

Which of the following operations will result in a number with 3 significant figures?

• 12.34 + 0.567

• 123.4 x0.0567

• 1.234 \ 0.0567

• 1234 - 567

Express 0.000789 in scientific notation.

• 7.89 x 10^{-4}

• 7.89 x 10^{-3}

• 7.89 x 10^{-2}

• 7.89 x 10^{-5}

If a measurement is recorded as 0.00340, how many significant figures does it have?

• 2

• 3

• 4

• 5

Convert 2500 milliliters to liters using dimensional analysis.

• 0.25 liters

• 2.5 liters

• 25 liters

• 250 liters

Calculate the percent error if the experimental value is 47 and the accepted value is 50.

• 5%

• 6%

• 7%

• 8%