Question 1

Which of the following is a correct metric conversion for 2.5 milligrams to micrograms?

Accepted Answer

$2.5 	imes 10^3$ micrograms

Question 2

A solution of salt water (NaCl) in water contains 2.39 g of NaCl per 100 g of solution. If the density of the solution is $1.0 	ext{ g/mL}$, what is the volume of solution containing $8.5$ moles of NaCl? (Molar mass of NaCl = $58.5 	ext{ g/mol}$)

Accepted Answer

$2080$ mL

Question 3

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with fixed and uniform composition

Question 4

Convert $21.5^\circ 	ext{C}$ to Kelvin.

Accepted Answer

$294.7$ K

Question 5

A pound of food contains $10.5$ cups. If a German shepherd eats $5$ cups of dog food a day, how many pounds of food does it eat in a week?

Accepted Answer

$3.33$ pounds

Question 6

Which of the following is a pure substance?

Accepted Answer

Glucose ($C_6H_{12}O_6$)

Question 7

If the temperature change in an exothermic reaction is $11.9^\circ 	ext{C}$, what is the temperature change in $^\circ 	ext{F}$?

Accepted Answer

$21.4^\circ 	ext{F}$

Question 8

How many cubic centimeters are in $1$ cubic meter?

Accepted Answer

$1 	imes 10^6$ cm$^3$

Question 9

A sample of mercury ($Hg$) contains $6.0 	imes 10^{23}$ atoms and has a mass of $201$ grams. What is the volume of this sample if mercury's density is $13.6$ g/cm$^3$?

Accepted Answer

$14.8$ cm$^3$

Question 10

Which of the following has a fixed composition?

Accepted Answer

Elements and compounds

Question 11

Convert $125^\circ 	ext{C}$ to $^\circ 	ext{F}$.

Accepted Answer

$257^\circ 	ext{F}$

Question 12

A student health center needs to vaccinate $1,555$ students. Each vaccine requires $10.0$ mL of serum. Will $17.3$ quarts of serum be enough to vaccinate all the students? ($1$ quart $= 946$ mL)

Accepted Answer

No, there will not be enough serum

Question 13

Which of the following best explains why $C_3H_8$ (propane) is a pure substance and not a mixture?

Accepted Answer

It has a fixed composition with a specific ratio of carbon to hydrogen atoms

Question 14

If the average US farm encompasses $434$ acres, how many square miles is this? ($1$ km$^2 = 247$ acres, $1$ km$^2 = 0.6214$ miles$^2$)

Accepted Answer

$1.09$ miles$^2$

Question 15

Which of the following is NOT a pure substance?

Accepted Answer

Koolaid

Question 16

A wood wheel has a density of $0.59$ g/cm$^3$ and a mass of $9.5$ pounds. What is its volume in cm$^3$? ($1$ lb = $453.6$ g)

Accepted Answer

$7,300$ cm$^3$

Question 17

Which of the following best describes a mixture with the same composition throughout?

Accepted Answer

Homogeneous mixture

Question 18

If the temperature of the atmosphere falls by $25.6^\circ 	ext{F}$, what is the temperature change in $^\circ 	ext{C}$?

Accepted Answer

$-14.2^\circ 	ext{C}$

Question 19

Which of the following is a compound?

Accepted Answer

Table salt (NaCl)

Question 20

A French student has $550$ German marks and wants to change them into French francs. If a franc equals $0.185$ dollars, and $0.49$ dollars equals $1.41$ German marks, does she have enough money to spend the night in a hotel that costs $146$ francs per day?

Accepted Answer

No, she does not have enough francs

General Chemistry Study Notes: Measurement, Conversions, Significant Figures, and Classification of Matter

Study Guide - Practice Questions

Study Guide - Flashcards