Q: Which of the following is the correct conversion factor to convert from centimeters to inches?

$$\frac{1\ \text{in.}}{2.54\ \text{cm}}$$

Question 1

Which of the following numbers is correctly written in scientific notation?

Accepted Answer

$$5.6 	imes 10$$^{1}$$

Question 2

Convert $$0.00047 to $$scientific notation.

Accepted Answer

$$4.7 	imes 10$$^{-4}$$

Question 3

How many significant figures are in the measurement $$0.00480 kg$$?

Accepted Answer

3

Question 4

A student adds $$5.74$$, $$0.823$$, and $$2.651. $$According to the rules for significant figures, what is the correct answer?

Accepted Answer

$$9.21$$

Question 5

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

Accepted Answer

kilogram (kg)

Question 6

What is the value of $$10^{-2}$$?

Accepted Answer

$$0.01$$

Question 7

Which of the following best describes the difference between mass and weight?

Accepted Answer

Mass is the amount of matter, weight is the gravitational pull on that matter.

Question 8

A cube has sides of $$0.1$$ meters. What is its volume in liters?

Accepted Answer

$$1 L$$

Question 9

How many centimeters are in $$5.00$$ inches? (Use $$1 in$$ $$= 2.54 cm)$$

Accepted Answer

$$12.7 cm$$

Question 10

Which SI prefix corresponds to $$10^{-6}$$?

Accepted Answer

micro-

Question 11

A graduated cylinder contains $$75.2 mL of $$water. After a medallion is added, the volume rises to $$77.8 mL. If $$the medallion's mass is $$55.64 g$$, what is its density?

Accepted Answer

$$2.00 g/mL$$

Question 12

Which of the following is the correct conversion factor to convert from centimeters to inches?

Accepted Answer

$$\frac{1\ 	ext{in.}}{2.54\ 	ext{cm}}$$

Question 13

A football field is $$100$$ yards long. How many meters is this? (1 yd = 3 ft; 1 ft = 12 in; 1 in = 2.54 cm; 1 m = 100 cm)

Accepted Answer

$$91.4 m$$

Question 14

Which of the following is the correct formula for density?

Accepted Answer

$$d = \frac{m}{V}$$

Question 15

If you have $$1255 cm$^3$$, how many in$$^3 is $$this? (1 in = 2.54 cm)

Accepted Answer

$$76.6$$\ $$in^3$

Question 16

A sample of ethyl alcohol has a mass of $$100.0 g $$and a density of $$0.789 g/mL. $$What is its volume in mL?

Accepted Answer

$$127$$\ mL

Question 17

Which of the following best describes dimensional analysis?

Accepted Answer

A technique for converting units using conversion factors.

Question 18

When converting $$5.84 cm to $$inches using the conversion factor $$1 in$$ $$= 2.54 cm$$, what is the correct calculation?

Accepted Answer

$$5.84 	imes \frac{1}{2.54}$$

Measurement and Problem Solving: Key Concepts for Introductory Chemistry

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