Question 1

A 10.0 g sample of bismuth tribromide, BiBr3, contains:

Accepted Answer

A)  5.360 × 1022 total number of ions 
B)  0.322 mol BiBr3 
C)  3.14 × 1022 formula units BiBr3 
D)  1.34 × 1022 bromide ions 
E)  4.020 × 1022 total number of ions 
A)  5.360 × 1022 total number of ions 
B)  0.322 mol BiBr3 
C)  3.14 × 1022 formula units BiBr3 
D)  1.34 × 1022 bromide ions 
E)  4.020 × 1022 total number of ions

Question 2

Choose the INCORRECT name formula combination.

Accepted Answer

A)  Fe2(SO4)3 iron(III) sulfate 
B)  HBrO3 bromic acid 
C)  PCl5 phosphorus chloride 
D)  SCl4 sulfur tetrachloride 
E)  Sr(IO3)2 strontium iodate 
A)  Fe2(SO4)3 iron(III) sulfate 
B)  HBrO3 bromic acid 
C)  PCl5 phosphorus chloride 
D)  SCl4 sulfur tetrachloride 
E)  Sr(IO3)2 strontium iodate

Question 3

Choose the INCORRECT oxidation state.

Accepted Answer

A)  Cl is +5 in HClO3 
B)  C is +4 in CS2 
C)  S is +6 in H2SO3 
D)  C is -2 in CH3OH 
E)  Br is +3 in BrF3 
A)  Cl is +5 in HClO3 
B)  C is +4 in CS2 
C)  S is +6 in H2SO3 
D)  C is -2 in CH3OH 
E)  Br is +3 in BrF3

Question 4

A sample contains 43.7% phosphorus and 56.3% oxygen. The molar mass is 284 u. What is the molecular formula of the compound?

Accepted Answer

A)  P2O5 
B)  PO3 
C)  P4O10 
D)  P4O5 
E)  P5O8 
A)  P2O5 
B)  PO3 
C)  P4O10 
D)  P4O5 
E)  P5O8

Question 5

The name of the compound Cr(ClO4)3∙6H2O is ________.

Accepted Answer

A)  chromium(III) perchlorate hexahydrate 
B)  chromium(II) perchlorate hexahydrate 
C)  chromate perchlorate hydrate 
D)  chromate(III) perchlorate hexahydrate 
A)  chromium(III) perchlorate hexahydrate 
B)  chromium(II) perchlorate hexahydrate 
C)  chromate perchlorate hydrate 
D)  chromate(III) perchlorate hexahydrate

Question 6

In which compound does iodine have an oxidation state of +3?

Accepted Answer

A)  HIO3 
B)  IF5 
C)  Ca(IO2)2 
D)  HI 
E)  I2 
A)  HIO3 
B)  IF5 
C)  Ca(IO2)2 
D)  HI 
E)  I2

Question 7

What is the mass percent of H2O in magnesium chloride hexahydrate?

Accepted Answer

A)  10.7% 
B)  64.4% 
C)  8.86% 
D)  26.6% 
E)  53.2% 
A)  10.7% 
B)  64.4% 
C)  8.86% 
D)  26.6% 
E)  53.2%

Question 8

Hydrates are:

Accepted Answer

A)  moisture sensitive hygroscopic inorganic salts 
B)  compounds in which each formula unit has one or more water molecules associated with it 
C)  readily soluble in water and release energy. 
D)  organic compounds that contain oxygen together with usual carbon and hydrogen 
E)  concentrated solutions of salts in water 
A)  moisture sensitive hygroscopic inorganic salts 
B)  compounds in which each formula unit has one or more water molecules associated with it 
C)  readily soluble in water and release energy. 
D)  organic compounds that contain oxygen together with usual carbon and hydrogen 
E)  concentrated solutions of salts in water

Question 9

An unknown organic compound contains carbon, hydrogen, and bromine only. The mass percentages of C and H are 12.77% C and 1.60% H. Bromine from 1.88 g of this compound has been completely converted into 3.70 g of AgBr. The molar mass of unknown organic compound is 188 u. Determine the molecular formula of the unknown.

Accepted Answer

A)  CH3Br 
B)  C2H3Br2 
C)  C2H2Br2 
D)  C2H2Br4 
E)  C4H6Br4 
A)  CH3Br 
B)  C2H3Br2 
C)  C2H2Br2 
D)  C2H2Br4 
E)  C4H6Br4

Question 10

What is the correct name for the following organic structure? CH3CH2CHBrCH2CH3

Accepted Answer

A)  3-bromopentane 
B)  3-bromopropane 
C)  1-bromo-1-ethylpropane 
D)  pentane 
E)  pentylbromide 
A)  3-bromopentane 
B)  3-bromopropane 
C)  1-bromo-1-ethylpropane 
D)  pentane 
E)  pentylbromide

Question 11

A 200.0 g sample of pure MgCl2 contains:

Accepted Answer

A)  95.211 formula units MgCl2 
B)  2.101 formula units MgCl2 
C)  1.265 × 1024 formula units MgCl2 
D)  1.204 × 1026 formula units MgCl2 
E)  5.734 × 1025 formula units MgCl2 
A)  95.211 formula units MgCl2 
B)  2.101 formula units MgCl2 
C)  1.265 × 1024 formula units MgCl2 
D)  1.204 × 1026 formula units MgCl2 
E)  5.734 × 1025 formula units MgCl2

Question 12

How many grams of H2O are there in 10.0 g of tetraphenylarsonium chloride dihydrate, (C6H5)4AsCl · 2 H2O?

Accepted Answer

A)  0.860 g 
B)  0.792 g 
C)  0.430 g 
D)  0.396 g 
E)  0.239 g 
A)  0.860 g 
B)  0.792 g 
C)  0.430 g 
D)  0.396 g 
E)  0.239 g

Question 13

Which of the following contains the greatest number of atoms?

Accepted Answer

A)  1 mole of S8 molecules 
B)  2 moles of P4 molecules 
C)  4 moles of chlorine molecules 
D)  8 moles of H atoms 
E)  3 moles of ozone, O3 
A)  1 mole of S8 molecules 
B)  2 moles of P4 molecules 
C)  4 moles of chlorine molecules 
D)  8 moles of H atoms 
E)  3 moles of ozone, O3

Question 14

What is the formula of sodium hypochlorite?

Accepted Answer

A)  NaCl 
B)  NaClO 
C)  NaClO2 
D)  NaClO3 
E)  NaClO4 
A)  NaCl 
B)  NaClO 
C)  NaClO2 
D)  NaClO3 
E)  NaClO4

Question 15

Which of the following functional groups gives acidic properties to organic molecules?

Accepted Answer

A)  -OH 
B)  -COOCH3 
C)  -COOH 
D)  -C(O)H 
E)  -CH2OH 
A)  -OH 
B)  -COOCH3 
C)  -COOH 
D)  -C(O)H 
E)  -CH2OH

Question 16

In the following group, the compound with the greatest percentage of oxygen by mass is:

Accepted Answer

A)  ClO2 
B)  Na2CO3 
C)  P4O6 
D)  SO2 
E)  As2O3 
A)  ClO2 
B)  Na2CO3 
C)  P4O6 
D)  SO2 
E)  As2O3

Question 17

Nitroglycerin, C3H5N3O3:

Accepted Answer

A)  has equal amounts of C and N by mass 
B)  has less than 50% O by mass 
C)  has the same proportion of N to H atoms as does NH3 
D)  has the same mass percent of C and N 
E)  has higher mass percent of H than O 
A)  has equal amounts of C and N by mass 
B)  has less than 50% O by mass 
C)  has the same proportion of N to H atoms as does NH3 
D)  has the same mass percent of C and N 
E)  has higher mass percent of H than O

Question 18

The formula mass of aradridic acid, CH3(CH2)18COOH, a fatty acid found in peanut oil, is ________.

Accepted Answer

A)  176.000 u 
B)  312.538 u 
C)  92.079 u 
D)  306.126 u 
E)  352.000 u 
A)  176.000 u 
B)  312.538 u 
C)  92.079 u 
D)  306.126 u 
E)  352.000 u

Question 19

The suffix -ol designates the presence of which functional group?

Accepted Answer

A)  -OH 
B)  -COOH 
C)  -CH3 
D)  -COOCH3 
E)  -C(O)H 
A)  -OH 
B)  -COOH 
C)  -CH3 
D)  -COOCH3 
E)  -C(O)H

Question 20

What is the formula of sodium bicarbonate?

Accepted Answer

A)  NaHCO3 
B)  Na2CO3 
C)  NaHCO2 
D)  Na2C2 
E)  Na2C2O4 
A)  NaHCO3 
B)  Na2CO3 
C)  NaHCO2 
D)  Na2C2 
E)  Na2C2O4

Exam 3: Chemical Compounds

A 10.0 g sample of bismuth tribromide, BiBr3, contains:

Choose the INCORRECT name formula combination.

Choose the INCORRECT oxidation state.

A sample contains 43.7% phosphorus and 56.3% oxygen. The molar mass is 284 u. What is the molecular formula of the compound?

The name of the compound Cr(ClO4)3∙6H2O is ________.

In which compound does iodine have an oxidation state of +3?

What is the mass percent of H2O in magnesium chloride hexahydrate?

Hydrates are:

What is the correct name for the following organic structure? CH3CH2CHBrCH2CH3

A 200.0 g sample of pure MgCl2 contains:

How many grams of H2O are there in 10.0 g of tetraphenylarsonium chloride dihydrate, (C6H5)4AsCl · 2 H2O?

Which of the following contains the greatest number of atoms?

What is the formula of sodium hypochlorite?

Which of the following functional groups gives acidic properties to organic molecules?

In the following group, the compound with the greatest percentage of oxygen by mass is:

Nitroglycerin, C3H5N3O3:

The formula mass of aradridic acid, CH3(CH2)18COOH, a fatty acid found in peanut oil, is ________.

The suffix -ol designates the presence of which functional group?

What is the formula of sodium bicarbonate?

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

A 10.0 g sample of bismuth tribromide, BiBr₃, contains:

The name of the compound Cr(ClO₄)₃∙6H₂O is ________.

What is the mass percent of H₂O in magnesium chloride hexahydrate?

What is the correct name for the following organic structure? CH₃CH₂CHBrCH₂CH₃

A 200.0 g sample of pure MgCl₂ contains:

How many grams of H₂O are there in 10.0 g of tetraphenylarsonium chloride dihydrate, (C₆H₅)₄AsCl · 2 H₂O?

Nitroglycerin, C₃H₅N₃O₃:

The formula mass of aradridic acid, CH₃(CH₂)₁₈COOH, a fatty acid found in peanut oil, is ________.