Question 1

A piece of metal has a mass of 48.0 g. When placed in a graduated cylinder containing 25.0 mL of water, the water level rises to 33.0 mL. What is the density of the metal in $\mathrm{g/cm^3}$?

Accepted Answer

$6.0\ \mathrm{g/cm^3}$

Question 2

Which of the following statements about density is correct?

Accepted Answer

Density is the ratio of the mass of a substance to its volume.

Question 3

A patient receives 2.0 teaspoons of cough syrup. If the syrup has a density of $1.20\ \mathrm{g/mL}$ and $1\ \mathrm{tsp} = 5.0\ \mathrm{mL}$, what is the mass of syrup administered?

Accepted Answer

$12\ \mathrm{g}$

Question 4

A liquid has a density of $1.32\ \mathrm{g/mL}$. What is the volume, in mL, of a $14.7\ \mathrm{g}$ sample of this liquid?

Accepted Answer

$11.1\ \mathrm{mL}$

Question 5

Which of the following objects will float in water ($\mathrm{D_{water} = 1.00\ g/mL}$) at $4^\circ$C?

Accepted Answer

Cork ($\mathrm{D = 0.26\ g/mL}$)

Question 6

A sample of ice has a mass of $9.2\ \mathrm{g}$ and a volume of $10.0\ \mathrm{cm^3}$. What is its density?

Accepted Answer

$0.92\ \mathrm{g/cm^3}$

Question 7

A nurse needs to prepare $25.0\ \mathrm{mL}$ of a saline solution with a density of $1.05\ \mathrm{g/mL}$. What mass of solution should she measure?

Accepted Answer

$26.3\ \mathrm{g}$

Question 8

Which of the following best describes specific gravity?

Accepted Answer

The ratio of the density of a substance to the density of water at $4^\circ$C.

Question 9

A student finds that a $68.60\ \mathrm{g}$ zinc object displaces $9.5\ \mathrm{mL}$ of water. What is the density of zinc in $\mathrm{g/cm^3}$?

Accepted Answer

$7.2\ \mathrm{g/cm^3}$

Question 10

If a liquid has a specific gravity of $0.85$, what can you conclude about its density?

Accepted Answer

Its density is $0.85\ \mathrm{g/mL}$ at $4^\circ$C.

Question 11

A gas sample has a mass of $2.50\ \mathrm{g}$ and occupies a volume of $1.25\ \mathrm{L}$. What is its density in $\mathrm{g/L}$?

Accepted Answer

$2.00\ \mathrm{g/L}$

Question 12

A patient is given $15.0\ \mathrm{mL}$ of a medication with a density of $0.80\ \mathrm{g/mL}$. What is the mass of medication administered?

Accepted Answer

$12.0\ \mathrm{g}$

Question 13

Which of the following is NOT a correct unit for density?

Accepted Answer

$\mathrm{cm^3/g}$

Question 14

A $20.0\ \mathrm{g}$ sample of a metal is placed in a graduated cylinder containing $30.0\ \mathrm{mL}$ of water. The water level rises to $32.5\ \mathrm{mL}$. What is the density of the metal?

Accepted Answer

$8.0\ \mathrm{g/cm^3}$

Question 15

A laboratory technician needs to prepare $100.0\ \mathrm{g}$ of a solution with a density of $1.25\ \mathrm{g/mL}$. What volume of solution should be measured?

Accepted Answer

$80.0\ \mathrm{mL}$

Question 16

Which of the following best explains why ice floats on water?

Accepted Answer

Ice has a lower density than liquid water.

Question 17

A $50.0\ \mathrm{g}$ sample of a substance has a specific gravity of $2.00$. What is its volume in $\mathrm{mL}$?

Accepted Answer

$25.0\ \mathrm{mL}$

Density and Measurement in GOB Chemistry

Study Guide - Practice Questions

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