Question 1

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between two nonmetal atoms.

Question 2

What is the empirical formula for a compound containing 81.05% C and 8.162% H, with the remainder being oxygen?

Accepted Answer

$\mathrm{C}_6\mathrm{H}_8\mathrm{O}_2$

Question 3

Which of the following is the correct IUPAC name for $\mathrm{FeSO}_4$?

Accepted Answer

Iron(II) sulfate

Question 4

A sample contains 325 mg of acetylsalicylic acid ($\mathrm{C}_9\mathrm{H}_8\mathrm{O}_4$). How many moles of acetylsalicylic acid does it contain?

Accepted Answer

$1.80 	imes 10^{-3}$ mol

Question 5

Which of the following compounds is named correctly according to IUPAC rules?

Accepted Answer

CaCO$_3$ – Calcium carbonate

Question 6

What is the mass percent of chlorine in $\mathrm{CCl}_2\mathrm{F}_2$? (Molar mass = 120.91 g/mol, Cl = 35.45 g/mol)

Accepted Answer

58.64%

Question 7

Which formula represents a compound with the smallest whole-number ratio of atoms?

Accepted Answer

Empirical formula

Question 8

How many moles of Cl are present in 38.5 mol of $\mathrm{CCl}_2\mathrm{F}_2$?

Accepted Answer

77.0 mol

Question 9

Which of the following is the correct name for $\mathrm{CuSO}_4 \cdot 5\mathrm{H}_2\mathrm{O}$?

Accepted Answer

Copper(II) sulfate pentahydrate

Question 10

What is the correct molecular formula for a compound with an empirical formula of $\mathrm{CH}_2\mathrm{O}$ and a molar mass of 180.16 g/mol?

Accepted Answer

$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6$

Question 11

Which of the following is the correct name for $\mathrm{N}_2\mathrm{O}_5$?

Accepted Answer

Dinitrogen pentoxide

Question 12

What is the correct name for $\mathrm{H}_2\mathrm{SO}_4$?

Accepted Answer

Sulfuric acid

Question 13

Which of the following is a hydrocarbon containing only single bonds?

Accepted Answer

Alkane

Question 14

What is the correct IUPAC name for the following structure: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3$?

Accepted Answer

Butane

Question 15

Which of the following is the correct name for $\mathrm{K}_2\mathrm{CO}_3$?

Accepted Answer

Potassium carbonate

Question 16

A compound is found to contain 40.0% C, 6.7% H, and 53.3% O by mass. What is its empirical formula?

Accepted Answer

$\mathrm{CH}_2\mathrm{O}$

Question 17

Which of the following is the correct name for $\mathrm{NH}_4\mathrm{NO}_3$?

Accepted Answer

Ammonium nitrate

Question 18

What is the correct name for $\mathrm{C}_6\mathrm{H}_6$?

Accepted Answer

Benzene

Question 19

Which of the following is the correct name for $\mathrm{CaSO}_4 \cdot 0.5\mathrm{H}_2\mathrm{O}$?

Accepted Answer

Calcium sulfate hemihydrate

Question 20

Which of the following is the correct name for $\mathrm{NO}_2$?

Accepted Answer

Nitrogen dioxide

Molecules, Compounds, and Nomenclature: Study Notes

Study Guide - Practice Questions