Significant Digits – Chemistry Quiz
This quiz covers significant digits – Chemistry Quiz
Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits.
Correct Answers
770.6g ÷ 0.42mL = 1.8 x 103 g/mL
7.81cm × 3.30cm = 25.8cm2
940.85g ÷ 54.2mL = 17.4g/mL
Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits.
Correct Answers
2.500mL + 10.97mL = 13.47mL
17.97mL + 9.7mL = 27.7mL
18.50mL − 12.7mL = 5.8mL
Complete the table below.
Correct Answers
70 dL = 7 L
2 Mg = 2,000,000 g
3 ks = 3000 s
2000 mm = 2 m
A molecular biologist measures the mass of cofactor A in an average yeast cell. The mass is 96.7 pg. What is the total mass in micrograms of cofactor A in a yeast colony containing 105 cells? Write your answer as a decimal.
9.67 µg – Correct
A geologist measures the height of a mountain. The height is 3.8749 km. What is the height in meters? Write your answer as a decimal.
3874.9 m – Correct
A student sets up the following equation to convert a measurement.
(The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation.
(0.010
g/mL).(
1mL/10-3L) = ? g/L – Correct
Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits.
Correct Answers
561.00mol ÷ 0.90L = 6.2 x 102 mol/L
93.4g/mL × 47.mL = 4.4 x 103 g
294.77mol ÷ 43.02L = 6.852 mol/L
A student sets up the following equation to convert a measurement.
(The ? stands for a number the student is going to calculate.)Fill in the missing part of this equation.
(-4.7 x 103 N/cm).(1 cm/10-2 m).(10-3 m/1 mm) = ? N/mm – Correct