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, 8.162% H, and the remainder O by mass?

Accepted Answer

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

Question 3

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 4

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

Accepted Answer

Iron(II) sulfate

Question 5

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 6

Which formula represents the actual number of atoms of each element in a molecule?

Accepted Answer

Molecular formula

Question 7

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

Accepted Answer

77.0 mol

Question 8

Which of the following is the correct IUPAC name for $$\mathrm{CaCl}_2 \cdot 6\mathrm{H}_2\mathrm{O}$$?

Accepted Answer

Calcium chloride hexahydrate

Question 9

What is the correct name for the compound $$\mathrm{CuSO}_4 \cdot 5\mathrm{H}_2\mathrm{O}$$?

Accepted Answer

Copper(II) sulfate pentahydrate

Question 10

Which of the following 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 $$\mathrm{K}_2\mathrm{CO}_3$$?

Accepted Answer

Potassium carbonate

Question 12

What is the correct name for $$\mathrm{N}_2\mathrm{O}_5$$?

Accepted Answer

Dinitrogen pentoxide

Question 13

Which of the following is the correct name for $$\mathrm{HNO}_3$$?

Accepted Answer

Nitric acid

Question 14

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

Accepted Answer

Butane

Question 15

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

Accepted Answer

Propanol

Question 16

What is the correct name for the compound $$\mathrm{CH}_3\mathrm{CH}_2\mathrm{CH}_2\mathrm{CH}_2\mathrm{CH}_3$$ with a methyl group attached to the third carbon?

Accepted Answer

3-Methylpentane

Question 17

Which of the following is the correct name for a cyclic hydrocarbon with four carbon atoms and a methyl group attached to the third carbon?

Accepted Answer

3-Methylcyclobutane

Question 18

What is the correct name for $$\mathrm{C}_6\mathrm{H}_5\mathrm{CH}_2\mathrm{CH}_3$$?

Accepted Answer

Phenylethane

Question 19

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

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

Molecules, Compounds, and Nomenclature: Study Notes for General Chemistry

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