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

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