# Significant Digits – Chemistry Chapter 1 Quiz

### 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.

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.

2.500mL + 10.97mL = 13.47mL

17.97mL + 9.7mL = 27.7mL

18.50mL − 12.7mL = 5.8mL

Complete the table below.

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.. 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.

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

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. What is the total mass in micrograms of cofactor A in a yeast colony containing 105cells? Write your answer as a decimal.

. What is the total mass in micrograms of cofactor A in a yeast colony containing 105cells? Write your answer as a decimal.