Q: Which of the following is the correct relationship for converting Celsius to Fahrenheit?

$$^\circ\mathrm{F} = (1.8 \times ^\circ\mathrm{C}) + 32$$

Question 1

Which of the following best describes a chemical change?

Accepted Answer

Burning of wood in air

Question 2

Which of the following is a homogeneous mixture?

Accepted Answer

Salt water

Question 3

Which of the following is the correct chemical formula for table sugar (sucrose)?

Accepted Answer

$$\mathrm{C$$_{12}$$H_{22}O$$_{11}}$

Question 4

A sample of gold has a mass of 19.3 g and a volume of 1.00 cm$$^3. $$What is the density of gold?

Accepted Answer

$$19.3\ \mathrm{g/cm^3$}$$

Question 5

Which of the following is an example of a derived SI unit?

Accepted Answer

Gram per cubic centimeter (g/cm$$^3)$$

Question 6

Convert 0.00215 to scientific notation.

Accepted Answer

$$2.15 	imes 10$$^{-3}$$

Question 7

Which of the following statements about significant figures is correct?

Accepted Answer

Zeroes at the end of a number and after the decimal point are significant.

Question 8

A patient’s urine has a density of $$1.025\ \mathrm{g/mL}. $$What is the specific gravity of the urine?

Accepted Answer

1.025

Question 9

Which of the following is the correct relationship for converting Celsius to Fahrenheit?

Accepted Answer

$$^\circ\mathrm{F} = (1.8 	imes ^\circ\mathrm{C}) + 32$$

Question 10

A solution is prepared by dissolving 5.00 g of NaCl in enough water to make 250.0 mL of solution. What is the density of the solution if its mass is 255.0 g?

Accepted Answer

$$1.02\ \mathrm{g/mL}$$

Question 11

Which of the following is a physical property?

Accepted Answer

Color

Question 12

Which of the following is the correct SI unit for measuring temperature?

Accepted Answer

Kelvin (K)

Question 13

How many significant figures are in the measurement 0.02907 mL?

Accepted Answer

4

Question 14

Which of the following is a correct conversion factor for converting kilometers to miles?

Accepted Answer

$$\frac{1\ \mathrm{km}}{0.6214\ \mathrm{mi}}$$

Question 15

A nurse needs to convert a patient’s weight from pounds to kilograms. If the patient weighs 150 lb, what is the weight in kilograms? ($$1\ \mathrm{kg} = 2.205\ \mathrm{lb})$$

Accepted Answer

$$68.0\ \mathrm{kg}$$

Question 16

Which of the following is a compound?

Accepted Answer

Water

Question 17

A sample of air has a density of $$0.001185\ \mathrm{g/mL}. $$What is the mass of 2.00 L of air? ($$1\ \mathrm{L} = 1000\ \mathrm{mL})$$

Accepted Answer

$$2.37\ \mathrm{g}$$

Question 18

Which of the following is the correct definition of specific gravity?

Accepted Answer

The density of a substance divided by the density of water at the same temperature

Question 19

Which of the following is a correct statement about the scientific method?

Accepted Answer

It is a process involving observation, hypothesis, and experimentation.

Matter and Measurements: Fundamentals of General, Organic, and Biological Chemistry

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