Unit 3 Test Prep

Express 0.001299 L to 3 significant figures

• 0.00130

• 0.0013

• 0.00129

• 1.3 * 10^-3

The _______ one rule states that you should add 1 digit of uncertainty to a measured number.

• plus

• minus

• multiplication

• division

Convert 0.04567 kg to milligrams using the correct number of significant figures

• 45670 mg

• 4567 mg

• 45700 mg

• 4.567 * 10⁴ mg

An initial temperature on a thermometer is between 70.2°C and 70.3°C, but it is closer to 70.2°C. Which of the following are appropriate to record?

• 70.220°C

• 70.25°C

• 70.2°C

• 70.22°C

Express 25000 cm in scientific notation with the correct number of significant figures

• 2.5 * 10⁴ cm

• 2.500 * 10⁴ cm

• 25000 cm

• 2.5000 * 10⁴ cm

Express 899.61 to 3 significant figures.

• 900.0

• 900

• 900.

• 900.00

Which of the following is an example of atomic absorption?

• n=4 to n=2

• n=4 to n=5

• n=4 to n=4

• n=4 to n=4.5

Express 899.61 to 2 significant figures.

• 900.

• 90

• 9.0 * 10²

• 90.

Convert 30 mL to liters

• 0.003 L

• 0.03 L

• 300 L

• 3,000 L

Which answer is correct for: 0.50 + 1.270

• 1.770

• 1.7

• 1.77

• 1.80