Question 1

Which of the following is the correct systematic name for the compound $N_2O_5$?

Accepted Answer

Dinitrogen pentoxide

Question 2

What is the correct formula for rubidium peroxide?

Accepted Answer

$Rb_2O_2$

Question 3

Which acid is named using the prefix 'hydro-' and the suffix '-ic'?

Accepted Answer

HCl (hydrochloric acid)

Question 4

Calculate the molar mass of acetone ($C_3H_6O$). Use the following atomic masses: C = 12.01 g/mol, H = 1.008 g/mol, O = 16.00 g/mol.

Accepted Answer

$58.08\ g/mol$

Question 5

A compound contains 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. What is its empirical formula?

Accepted Answer

$CH_2O$

Question 6

Which of the following compounds is a hydrate?

Accepted Answer

$CuSO_4 \cdot 5H_2O$

Question 7

What is the correct name for $P_4O_{10}$?

Accepted Answer

Tetraphosphorus decoxide

Question 8

Which of the following acids is derived from the perchlorate ion?

Accepted Answer

Perchloric acid ($HClO_4$)

Question 9

A sample of water ($H_2O$) weighs 18.0 g. What is the mass percent of hydrogen in water?

Accepted Answer

$11.2\%$

Question 10

Which of the following is the correct formula for dioxgyen difluoride?

Accepted Answer

$O_2F_2$

Question 11

If a compound has an empirical formula mass of $30\ g/mol$ and a molecular mass of $180\ g/mol$, what is its molecular formula?

Accepted Answer

$C_6H_{12}O_6$

Question 12

Which of the following is the correct systematic name for $Nb_2O_5$?

Accepted Answer

Diniobium pentoxide

Question 13

What is the correct formula for vanadium (V) fluoride?

Accepted Answer

$VF_5$

Question 14

Which of the following is the correct name for $Li_2O_2$?

Accepted Answer

Lithium peroxide

Question 15

A compound is found to contain 52.2% carbon, 13.0% hydrogen, and 34.8% oxygen by mass. What is its empirical formula?

Accepted Answer

$C_2H_6O$

Question 16

Which of the following is the correct name for $Ti(NO_3)_4$?

Accepted Answer

Titanium(IV) nitrate

Question 17

Which of the following acids is named using the '-ous' suffix?

Accepted Answer

Chlorous acid ($HClO_2$)

Question 18

Calculate the mass percent of oxygen in calcium carbonate ($CaCO_3$). Atomic masses: Ca = 40.08 g/mol, C = 12.01 g/mol, O = 16.00 g/mol.

Accepted Answer

$47.96\%$

Question 19

Which of the following is the correct formula for gallium oxide?

Accepted Answer

$Ga_2O_3$

Question 20

A hydrate of magnesium sulfate contains 7 moles of water per mole of $MgSO_4$. What is its formula?

Accepted Answer

$MgSO_4 \cdot 7H_2O$

Naming Compounds, Acids, and Chemical Formulas: A General Chemistry Study Guide

Study Guide - Practice Questions