Q: Which of the following is the correct formula for density?

$$\text{Density} = \frac{\text{mass}}{\text{volume}}$$

Q: Which of the following is the correct conversion factor for $$1$$ hour $$= 60$$ minutes?

$$\frac{60\text{ min}}{1\text{ h}}$$

Question 1

Which of the following is the correct SI unit for mass?

Accepted Answer

kilogram (kg)

Question 2

A doctor prescribes 0.150 milligrams of acetaminophen. If you only have 50 microgram tablets, how many tablets are required to provide the prescribed dosage?

Accepted Answer

3 tablets

Question 3

Which of the following measurements contains four significant figures?

Accepted Answer

$$4.050$$ Liters

Question 4

A sample of metal weighs $$48.0$$ grams and causes the water level in a graduated cylinder to rise from $$25.0 mL to$$ $$33.0 mL. $$What is the density of the metal in grams/mL?

Accepted Answer

$$6.0$$ grams/mL

Question 5

Which of the following is NOT a significant figure in the number $$0.0702$$?

Accepted Answer

The zero before 7

Question 6

If a person weighs $$178 lb$$, what is their mass in kilograms? (Use $$1 kg$$ $$= 2.20 lb)$$

Accepted Answer

$$80.9 kg$$

Question 7

Which prefix represents $$10^{-6}$$?

Accepted Answer

micro

Question 8

A rattlesnake is $$2.44$$ meters long. How many centimeters long is the snake?

Accepted Answer

$$244 cm$$

Question 9

Which of the following statements about significant figures is correct?

Accepted Answer

Zeros between nonzero digits are significant.

Question 10

What is the correct answer for $$(12.18 	imes 5.2)$$ rounded to the correct number of significant figures?

Accepted Answer

$$63$$

Question 11

Which equality is correct for length units?

Accepted Answer

$$1 m$$ $$= 100 cm$$

Question 12

A liquid has a density of $$1.32$$ grams/mL. What is the volume in mL of a $$14.7-$$gram sample?

Accepted Answer

$$11.1 mL$$

Question 13

Which of the following is an exact number and does NOT affect significant figures in calculations?

Accepted Answer

$$1$$ gram $$= 1000$$ milligrams

Question 14

How many minutes are in $$1.6$$ days?

Accepted Answer

$$2304$$ minutes

Question 15

Which of the following is the correct formula for density?

Accepted Answer

$$	ext{Density} = \frac{	ext{mass}}{	ext{volume}}$$

Question 16

A cube has sides of $$10 cm. $$What is its volume in liters?

Accepted Answer

$$1 L$$

Question 17

Which of the following is the correct relationship between liters and milliliters?

Accepted Answer

$$1 L$$ $$= 1000 mL$$

Question 18

When adding $$2.012$$, $$61.09$$, and $$3.0$$, what is the correct answer rounded to the proper decimal place?

Accepted Answer

$$66.1$$

Question 19

Which of the following is a real-world application of density?

Accepted Answer

Determining bone health using X-rays

Question 20

Which of the following is the correct conversion factor for $$1$$ hour $$= 60$$ minutes?

Accepted Answer

$$\frac{60	ext{ min}}{1	ext{ h}}$$

Chemistry and Measurements: Foundations for Scientific Study

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