Q: Which conversion factor would you use to convert inches to centimeters?

$1\ \text{in} = 2.54\ \text{cm}$

Q: What is the correct conversion factor to use when converting $in^2$ to $cm^2$?

$(2.54\ \text{cm})^2 = 1\ \text{in}^2$

Q: If you need to convert 23.5 meters to nanometers, which conversion factor should you use?

$1\ \text{nm} = 10^{-9}\ \text{m}$

Q: Which of the following is the correct way to set up a dimensional analysis problem to convert 32 cm to inches? (Use $1\ \text{in} = 2.54\ \text{cm}$)

$32\ \text{cm} \times \frac{1\ \text{in}}{2.54\ \text{cm}}$

Q: Which of the following is the correct conversion factor to use when converting miles to kilometers?

$1\ \text{mile} = 1.609\ \text{km}$

Question 1

Which of the following best describes a derived unit in chemistry?

Accepted Answer

A unit that is a combination of other units, such as volume or density.

Question 2

A student measures the mass of a cube as 5.0 g and each side as 2.5 cm. What is the density of the cube in $g/cm^3$? (Use $D = \frac{m}{V}$ and $V = l^3$)

Accepted Answer

$0.32\ g/cm^3$

Question 3

Which of the following is the correct scientific notation for 0.000135?

Accepted Answer

$1.35 	imes 10^{-4}$

Question 4

How many milliliters are in 1.63 liters?

Accepted Answer

$1630\ mL$

Question 5

A metal cylinder has a mass of 8.3 g, a length of 1.93 cm, and a radius of 0.55 cm. What is its density in $g/cm^3$? (Use $V = \pi r^2 l$ and $D = \frac{m}{V}$)

Accepted Answer

$4.1\ g/cm^3$

Question 6

Which conversion factor would you use to convert inches to centimeters?

Accepted Answer

$1\ 	ext{in} = 2.54\ 	ext{cm}$

Question 7

If you have 5 $\mu$L, which of the following is NOT an equivalent volume?

Accepted Answer

$0.05\ mL$

Question 8

How many significant figures are in the measurement 0.004750?

Accepted Answer

5

Question 9

A piece of paper measures 8 inches by 11 inches. What is its area in $m^2$? (Use $2.54\ 	ext{cm} = 1\ 	ext{in}$ and $1\ 	ext{m} = 100\ 	ext{cm}$)

Accepted Answer

$0.045\ m^2$

Question 10

Which of the following statements about density is TRUE?

Accepted Answer

Density is measured in units of mass/volume.

Question 11

What is the correct conversion factor to use when converting $in^2$ to $cm^2$?

Accepted Answer

$(2.54\ 	ext{cm})^2 = 1\ 	ext{in}^2$

Question 12

A 180-pound person weighs how many kilograms? (Use $1\ 	ext{kg} = 2.2046\ 	ext{lb}$)

Accepted Answer

$81.6\ kg$

Question 13

Which of the following is NOT a step in the general problem solving strategy for chemistry?

Accepted Answer

Guess the answer

Question 14

What is the volume in $cm^3$ of a cylinder with a radius of 0.55 cm and a length of 1.93 cm? (Use $V = \pi r^2 l$)

Accepted Answer

$1.83\ cm^3$

Question 15

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

Accepted Answer

micro

Question 16

If you need to convert 23.5 meters to nanometers, which conversion factor should you use?

Accepted Answer

$1\ 	ext{nm} = 10^{-9}\ 	ext{m}$

Question 17

Which of the following is the correct way to set up a dimensional analysis problem to convert 32 cm to inches? (Use $1\ 	ext{in} = 2.54\ 	ext{cm}$)

Accepted Answer

$32\ 	ext{cm} 	imes \frac{1\ 	ext{in}}{2.54\ 	ext{cm}}$

Question 18

Which of the following is a correct statement about significant figures?

Accepted Answer

Trailing zeros in a decimal number are significant.

Question 19

Which of the following is the correct conversion factor to use when converting miles to kilometers?

Accepted Answer

$1\ 	ext{mile} = 1.609\ 	ext{km}$

Matter, Measurement, and Problem Solving: Foundations of Quantitative Chemistry

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