Question 1

A hospital pharmacist needs to prepare 500 mL of a saline solution. If the density of the solution is $1.05 \ \mathrm{g/mL}$, what is the mass of the solution in kilograms?

Accepted Answer

$0.525 \ \mathrm{kg}$

Question 2

A patient receives an injection containing $0.25 \ \mathrm{mg}$ of a drug. How many micrograms ($\mu\mathrm{g}$) of the drug did the patient receive?

Accepted Answer

$250 \ \mu\mathrm{g}$

Question 3

A sample of gold has a mass of $96.5 \ \mathrm{g}$ and a volume of $5.00 \ \mathrm{mL}$. What is the density of gold in $\mathrm{g/mL}$?

Accepted Answer

$19.3 \ \mathrm{g/mL}$

Question 4

A nurse needs to convert a patient's body temperature from $39.0^\circ \mathrm{C}$ to Fahrenheit. What is the temperature in $^\circ \mathrm{F}$? (Use $^\circ \mathrm{F} = \frac{9}{5} 	imes ^\circ \mathrm{C} + 32$)

Accepted Answer

$102.2^\circ \mathrm{F}$

Question 5

A laboratory technician adds $2.50 \ \mathrm{g}$ of sodium chloride to $100.0 \ \mathrm{mL}$ of water. If the final solution has a density of $1.02 \ \mathrm{g/mL}$, what is the total mass of the solution?

Accepted Answer

$104.5 \ \mathrm{g}$

Question 6

Which of the following best describes a chemical change occurring in a real-world scenario?

Accepted Answer

A silver spoon tarnishing after being left out in the air

Question 7

A student records the mass of a sample as $0.00450 \ \mathrm{g}$. How many significant figures does this measurement have?

Accepted Answer

3

Question 8

A patient is given a nutritional supplement containing $12 \ \mathrm{g}$ of protein, $8 \ \mathrm{g}$ of fat, and $30 \ \mathrm{g}$ of carbohydrate. Using $4 \ \mathrm{kcal/g}$ for protein and carbohydrate, and $9 \ \mathrm{kcal/g}$ for fat, what is the total caloric content of the supplement (rounded to the nearest ten)?

Accepted Answer

$230 \ \mathrm{kcal}$

Question 9

A piece of metal with a mass of $50.0 \ \mathrm{g}$ is heated from $25.0^\circ \mathrm{C}$ to $75.0^\circ \mathrm{C}$, absorbing $400 \ \mathrm{cal}$ of heat. What is the specific heat of the metal in $\mathrm{cal/g}^\circ \mathrm{C}$? (Use $q = m c \Delta T$)

Accepted Answer

$0.16 \ \mathrm{cal/g}^\circ \mathrm{C}$

Question 10

Which of the following statements about the periodic table is correct?

Accepted Answer

Elements in the same group have similar chemical properties

Question 11

A sample of a gas is compressed in a syringe. Which property of the gas allows it to be compressed?

Accepted Answer

The particles are far apart relative to their size

Question 12

A neutral atom of zinc has 30 protons and 34 neutrons. What is its mass number?

Accepted Answer

64

Question 13

Which of the following elements is a metalloid and commonly used in computer chips due to its semiconducting properties?

Accepted Answer

Silicon

Question 14

A radioactive isotope of sodium has a mass number of 25. How many neutrons does it have?

Accepted Answer

14

Question 15

A solution has a density of $1.20 \ \mathrm{g/mL}$. What is its specific gravity?

Accepted Answer

$1.20$

Question 16

Which of the following is the correct electron arrangement for potassium (atomic number 19)?

Accepted Answer

2,8,8,1

Question 17

A sample of iron with a mass of $119 \ \mathrm{g}$ is placed in a graduated cylinder containing water. The water level rises from $57 \ \mathrm{mL}$ to $72 \ \mathrm{mL}$. What is the density of the iron?

Accepted Answer

$7.9 \ \mathrm{g/mL}$

Question 18

A patient is treated with cryosurgery at $-196^\circ \mathrm{C}$. What is this temperature in Kelvin? (Use $K = ^\circ \mathrm{C} + 273$)

Accepted Answer

$77 \ \mathrm{K}$

Question 19

Which of the following best describes valence electrons?

Accepted Answer

Electrons in the outermost energy level of an atom

CHEM 1306 Study Guide: Measurement, Matter, Energy, and Atomic Structure

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