CART - Chemistry Acceleration Readiness Measurement and Math Skills Questions and Answers

Question 1

A student performs a calculation to determine the volume of a rectangular block.
The measured dimensions are 12.20 cm, 3.45 cm, and 1.9 cm.
What is the volume of the block reported to the correct number of significant figures?

Accepted Answer

80 cm³

Answer

79.959 cm³

Answer

80.0 cm³

Answer

79.96 cm³

Question 2

A chemical reaction must be performed at a temperature of 398 K. What is this temperature in degrees Celsius (°C)?

Accepted Answer

125°C

Answer

671°C

Answer

-125°C

Answer

273°C

Question 3

Which of the following correctly expresses the number 0.0004075 in scientific notation?

Accepted Answer

4.075 x 10⁻⁴

Answer

4.075 x 10⁴

Answer

40.75 x 10⁻⁵

Answer

4.075 x 10⁻³

Question 4

A student measures the volume of a liquid using a 100 mL graduated cylinder with markings every 2 mL. The bottom of the meniscus is clearly above the 74 mL mark but below the 76 mL mark, appearing to be halfway between them. Which of the following is the most appropriate recording of this volume?

Accepted Answer

75 mL

Answer

75.0 mL

Answer

75.00 mL

Answer

74.5 mL

Question 5

The density of mercury is 13.6 g/cm³. What is the mass in kilograms (kg) of 2.50 liters (L) of mercury? (Note: 1 L = 1000 cm³)

Accepted Answer

34.0 kg

Answer

3.40 kg

Answer

0.0340 kg

Answer

34,000 kg

Question 6

A common speed limit in a residential area is 25 miles per hour (mph). What is this speed in meters per second (m/s)? (Given: 1 mile ≈ 1609 meters, 1 hour = 3600 seconds)

Accepted Answer

11 m/s

Answer

56 m/s

Answer

40 m/s

Answer

0.0069 m/s