Question 1

Identify the formula for barium nitrite.

Accepted Answer

A) Ba3N2 
B) BaNO3 
C) BN 
D) Ba(NO2)2 
E) B(NO2)3 
A) Ba3N2 
B) BaNO3 
C) BN 
D) Ba(NO2)2 
E) B(NO2)3

Question 2

Calculate the number of carbon atoms in 76.91 g of benzoic acid,C6H5COOH.

Accepted Answer

A) 6.693 × 1024 
B) 3.793 × 1023 
C) 2.655 × 1024 
D) 3.767 × 1025  
E) 4.488 × 1020 
A) 6.693 × 1024 
B) 3.793 × 1023 
C) 2.655 × 1024 
D) 3.767 × 1025  
E) 4.488 × 1020

Question 3

The chemical formula for calcium nitride is

Accepted Answer

A) Ca(NO3)2. 
B) Ca(NO2)2. 
C) Ca3N2. 
D) CaN2. 
A) Ca(NO3)2. 
B) Ca(NO2)2. 
C) Ca3N2. 
D) CaN2.

Question 4

Identify the cyanide ion.

Accepted Answer

A)  $\mathrm { MnO } _ { 4 }^-$ 
B) H $ \mathrm{CO}_{3}^{-} $ 
C)  $\mathrm { CO } _ { 3 } ^ { 2 - }$ 
D) HCN 
E)  $\mathrm { CN } ^ { - }$ 
A)  $\mathrm { MnO } _ { 4 }^-$ 
B) H $ \mathrm{CO}_{3}^{-} $ 
C)  $\mathrm { CO } _ { 3 } ^ { 2 - }$ 
D) HCN 
E)  $\mathrm { CN } ^ { - }$

Question 5

Identify an ether.

Accepted Answer

A) CH3CH2OCH2CH3 
B) CH3CH2OH 
C) CH3CH2NH2 
D) CH3CH2CH2CH3 
E) CH3COOH 
A) CH3CH2OCH2CH3 
B) CH3CH2OH 
C) CH3CH2NH2 
D) CH3CH2CH2CH3 
E) CH3COOH

Question 6

Give the name for HNO2.

Accepted Answer

Question 7

Calculate the molar mass of H2CO3.

Accepted Answer

A) 62.03 g mol-1 
B) 29.02 g mol-1 
C) 61.02 g mol-1 
D) 60.01 g mol-1 
E) 74.04 g mol-1 
A) 62.03 g mol-1 
B) 29.02 g mol-1 
C) 61.02 g mol-1 
D) 60.01 g mol-1 
E) 74.04 g mol-1

Question 8

How many chloride ions are there in 4.50 mol of aluminum chloride?

Accepted Answer

A) 3.00 chloride ions 
B) 13.5 chloride ions 
C) 2.71 × 1024 chloride ions 
D) 8.13 × 1024 chloride ions 
A) 3.00 chloride ions 
B) 13.5 chloride ions 
C) 2.71 × 1024 chloride ions 
D) 8.13 × 1024 chloride ions

Question 9

Which of the following is a molecular element?

Accepted Answer

A) Mg 
B) Ar 
C) Xe 
D) I 
E) Li 
A) Mg 
B) Ar 
C) Xe 
D) I 
E) Li

Question 10

Which of the following contains both ionic and covalent bonds?

Accepted Answer

A) CaI2 
B) CO2 
C) CaSO4 
D) SF6 
E) C2H4 
A) CaI2 
B) CO2 
C) CaSO4 
D) SF6 
E) C2H4

Question 11

Identify the correct formula for sodium chlorate.

Accepted Answer

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

Question 12

Determine the empirical formula for a compound that contains C,H,and O.It contains 52.14% C and 34.73% O by mass.

Accepted Answer

A) C2H6O 
B) CHO 
C) C4H13O2 
D) CH4O3 
E) CH3O 
A) C2H6O 
B) CHO 
C) C4H13O2 
D) CH4O3 
E) CH3O

Question 13

Determine the molecular formula of a compound that has a molar mass of 183.2 g mol-1 and an empirical formula of C2H5O2.

Accepted Answer

A) C2H5O2 
B) C6H15O6 
C) C3H7O3 
D) C4H10O4 
E) C8H20O8 
A) C2H5O2 
B) C6H15O6 
C) C3H7O3 
D) C4H10O4 
E) C8H20O8

Question 14

Describe a structural formula.

Accepted Answer

In a structural formula,lines

Question 15

Identify the formula for strontium nitride.

Accepted Answer

A) Sr3N2 
B) Sr(NO3)2 
C) SrN 
D) Sr2N3 
E) Sr(NO2)2 
A) Sr3N2 
B) Sr(NO3)2 
C) SrN 
D) Sr2N3 
E) Sr(NO2)2

Question 16

Which of the following is a molecular compound?

Accepted Answer

A) CuCl2 
B) N2O4 
C) NaNO3 
D) SrSO3 
E) RbBr 
A) CuCl2 
B) N2O4 
C) NaNO3 
D) SrSO3 
E) RbBr

Question 17

The chemical formula for the selenite ion is

Accepted Answer

A) Se-. 
B) Se2-. 
C) SeO32-. 
D) SeO42-. 
A) Se-. 
B) Se2-. 
C) SeO32-. 
D) SeO42-.

Question 18

What mass of water,H2O ,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl3F?

Accepted Answer

A) 0.0437 g 
B) 0.393 g 
C) 2.54 g 
D) 22.9 g 
A) 0.0437 g 
B) 0.393 g 
C) 2.54 g 
D) 22.9 g

Question 19

Identify the name for Sn(SO4)2.Remember that Sn forms several ions.

Accepted Answer

A) tin(I)sulfite 
B) tin(IV)sulfate 
C) tin sulfide 
D) tin(II)sulfite 
E) tin(I)sulfate 
A) tin(I)sulfite 
B) tin(IV)sulfate 
C) tin sulfide 
D) tin(II)sulfite 
E) tin(I)sulfate

Question 20

How many ${SO}_{3}^{2-} $ ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g mol-1.

Accepted Answer

A) 1.52 × 1027  ${SO}_{3}^{2-} $ions 
B) 4.76 × 1020 ${SO}_{3}^{2-} $ ions 
C) 2.10 × 1021 ${SO}_{3}^{2-} $ ions 
D) 1.05 × 1021 ${SO}_{3}^{2-} $ions 
E) 9.52 × 1020 ${SO}_{3}^{2-} $ ions 
A) 1.52 × 1027  ${SO}_{3}^{2-} $ions 
B) 4.76 × 1020 ${SO}_{3}^{2-} $ ions 
C) 2.10 × 1021 ${SO}_{3}^{2-} $ ions 
D) 1.05 × 1021 ${SO}_{3}^{2-} $ions 
E) 9.52 × 1020 ${SO}_{3}^{2-} $ ions

Exam 3: Molecules,compounds,and Nomenclature

Identify the formula for barium nitrite.

Calculate the number of carbon atoms in 76.91 g of benzoic acid,C6H5COOH.

The chemical formula for calcium nitride is

Identify the cyanide ion.

Identify an ether.

Give the name for HNO2.

Calculate the molar mass of H2CO3.

How many chloride ions are there in 4.50 mol of aluminum chloride?

Which of the following is a molecular element?

Which of the following contains both ionic and covalent bonds?

Identify the correct formula for sodium chlorate.

Determine the empirical formula for a compound that contains C,H,and O.It contains 52.14% C and 34.73% O by mass.

Determine the molecular formula of a compound that has a molar mass of 183.2 g mol-1 and an empirical formula of C2H5O2.

Describe a structural formula.

Identify the formula for strontium nitride.

Which of the following is a molecular compound?

The chemical formula for the selenite ion is

What mass of water,H2O ,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl3F?

Identify the name for Sn(SO4)2.Remember that Sn forms several ions.

How many SO32−{SO}_{3}^{2-} SO32−​ ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g mol-1.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Calculate the number of carbon atoms in 76.91 g of benzoic acid,C₆H₅COOH.

Give the name for HNO₂.

Calculate the molar mass of H₂CO₃.

Determine the molecular formula of a compound that has a molar mass of 183.2 g mol^-1 and an empirical formula of C₂H₅O₂.

What mass of water,H₂O,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl₃F?

Identify the name for Sn(SO₄)₂.Remember that Sn forms several ions.

How many ${SO}_{3}^{2-}$ ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃is 126.05 g mol^-1.