Question 1

What is the empirical formula for Hg2(NO3)2?

Accepted Answer

A) Hg2(NO3)2 
B) HgNO3 
C) Hg(NO3)2 
D) Hg2NO3 
E) Hg4(NO3)4 
A) Hg2(NO3)2 
B) HgNO3 
C) Hg(NO3)2 
D) Hg2NO3 
E) Hg4(NO3)4

Question 2

Write 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 3

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g/mol.

Accepted Answer

A) 1.23 × 1023 O atoms 
B) 2.96 × 1024 O atoms 
C) 2.87 × 1025 O atoms 
D) 1.10 × 1024 O atoms 
E) 3.19 × 1024 O atoms 
A) 1.23 × 1023 O atoms 
B) 2.96 × 1024 O atoms 
C) 2.87 × 1025 O atoms 
D) 1.10 × 1024 O atoms 
E) 3.19 × 1024 O atoms

Question 4

Write the name for Ca3(PO4)2.

Accepted Answer

A) calcium (III)phosphite 
B) calcium (II)phosphite 
C) calcium phosphate 
D) tricalcium phosphorustetraoxide 
E) calcium phosphite 
A) calcium (III)phosphite 
B) calcium (II)phosphite 
C) calcium phosphate 
D) tricalcium phosphorustetraoxide 
E) calcium phosphite

Question 5

Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.

Accepted Answer

A) NO 
B) N2O 
C) NO2 
D) N2O3 
E) NO3 
A) NO 
B) N2O 
C) NO2 
D) N2O3 
E) NO3

Question 6

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 7

Aluminum metal reacts with aqueous iron(II)chloride to form aqueous aluminum chloride and iron metal.What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest,whole-number stoichiometric coefficients?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 8

Which of the following elements has the least tendency to form an ion?

Accepted Answer

A) Ca 
B) K 
C) Kr 
D) Se 
A) Ca 
B) K 
C) Kr 
D) Se

Question 9

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of CO2 and 0.1451 g of H2O.What is the empirical formula of the compound?

Accepted Answer

A) CH2 
B) C2H5 
C) C4H10 
D) C5H2 
A) CH2 
B) C2H5 
C) C4H10 
D) C5H2

Question 10

Determine the empirical formula for a compound that is 70.79% carbon,8.91% hydrogen,4.59% nitrogen,and 15.72% oxygen.

Accepted Answer

A) C18H27NO3 
B) C18H27NO2 
C) C17H27NO3 
D) C17H26NO3 
A) C18H27NO3 
B) C18H27NO2 
C) C17H27NO3 
D) C17H26NO3

Question 11

In which set do all elements tend to form cations in binary ionic compounds?

Accepted Answer

A) K,Ga,O 
B) Sr,Ni,Hg 
C) N,P,Bi 
D) O,Br,I 
A) K,Ga,O 
B) Sr,Ni,Hg 
C) N,P,Bi 
D) O,Br,I

Question 12

How many moles of C3H8 contain 9.25 × 1024 molecules of C3H8?

Accepted Answer

A) 65.1 moles C3H8 
B) 28.6 moles C3H8 
C) 34.9 moles C3H8 
D) 46.2 moles C3H8 
E) 15.4 moles C3H8 
A) 65.1 moles C3H8 
B) 28.6 moles C3H8 
C) 34.9 moles C3H8 
D) 46.2 moles C3H8 
E) 15.4 moles C3H8

Question 13

The compound,Cu(N O2)2,is named

Accepted Answer

A) copper nitrite(II). 
B) copper(I)nitrite. 
C) copper(I)nitrite(II). 
D) copper(II)nitrite. 
A) copper nitrite(II). 
B) copper(I)nitrite. 
C) copper(I)nitrite(II). 
D) copper(II)nitrite.

Question 14

Write 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 15

The molecular weight of nitrous oxide (N2O),known as laughing gas,is ________ amu (rounded to one decimal place).

Accepted Answer

A) 60.0 
B) 30.0 
C) 44.0 
D) 3.0 
E) 22.0 
A) 60.0 
B) 30.0 
C) 44.0 
D) 3.0 
E) 22.0

Question 16

Which of the following is one possible form of pentane?

Accepted Answer

A) CH3CH2CH2CH2CH3 
B) CH3CH=CHCH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2NH2 
E) CH3CH2-O-CH2CH2CH3 
A) CH3CH2CH2CH2CH3 
B) CH3CH=CHCH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2NH2 
E) CH3CH2-O-CH2CH2CH3

Question 17

Calculate the moles of Fe in 16.0 g of Fe2O3.

Accepted Answer

A) 10.0 mol 
B) 0.10 mol 
C) 16.0 mol 
D) 0.200 mol 
A) 10.0 mol 
B) 0.10 mol 
C) 16.0 mol 
D) 0.200 mol

Question 18

Which statement is true?

Accepted Answer

A) All chemical bonds share electrons between atoms. 
B) A covalent bond involves transfer of electrons from a metal atom to a nonmetal atom. 
C) An ionic bond involves transfer of electrons from a metal atom to a nonmetal atom. 
D) An ionic bond is formed by sharing a pair of electrons. 
A) All chemical bonds share electrons between atoms. 
B) A covalent bond involves transfer of electrons from a metal atom to a nonmetal atom. 
C) An ionic bond involves transfer of electrons from a metal atom to a nonmetal atom. 
D) An ionic bond is formed by sharing a pair of electrons.

Question 19

Determine the name for H2CO3.

Accepted Answer

A) carbonous acid 
B) dihydrogen carbonate 
C) carbonic acid 
D) hydrocarbonic acid 
E) hydrocarbide acid 
A) carbonous acid 
B) dihydrogen carbonate 
C) carbonic acid 
D) hydrocarbonic acid 
E) hydrocarbide acid

Question 20

Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.

Accepted Answer

A) P3Cl 
B) PCl 
C) PCl2 
D) P2Cl3 
E) PCl3 
A) P3Cl 
B) PCl 
C) PCl2 
D) P2Cl3 
E) PCl3

What is the empirical formula for Hg₂(NO₃)₂?

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

How many atoms of oxygen are contained in 47.6 g of Al₂(CO₃)₃? The molar mass of Al₂(CO₃)₃is 233.99 g/mol.

Write the name for Ca₃(PO₄)₂.

Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.

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

Aluminum metal reacts with aqueous iron(II)chloride to form aqueous aluminum chloride and iron metal.What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest,whole-number stoichiometric coefficients?

Which of the following elements has the least tendency to form an ion?

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of CO₂ and 0.1451 g of H₂O.What is the empirical formula of the compound?

Determine the empirical formula for a compound that is 70.79% carbon,8.91% hydrogen,4.59% nitrogen,and 15.72% oxygen.

In which set do all elements tend to form cations in binary ionic compounds?

How many moles of C₃H₈ contain 9.25 × 10²⁴ molecules of C₃H₈?

The compound,Cu(NO₂)₂,is named

Write the formula for strontium nitride.

The molecular weight of nitrous oxide (N₂O),known as laughing gas,is ________ amu (rounded to one decimal place).

Which of the following is one possible form of pentane?

Calculate the moles of Fe in 16.0 g of Fe₂O₃.

Which statement is true?

Determine the name for H₂CO₃.

Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.

Matter, Measurement, and Problem Solving

Atoms and Elements

Chemical Quantities and Aqueous Reactions

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

Exam 3: Molecules, Compounds and Chemical Equations

What is the empirical formula for Hg2(NO3)2?

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

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g/mol.

Write the name for Ca3(PO4)2.

Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.

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

Aluminum metal reacts with aqueous iron(II)chloride to form aqueous aluminum chloride and iron metal.What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest,whole-number stoichiometric coefficients?

Which of the following elements has the least tendency to form an ion?

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of CO2 and 0.1451 g of H2O.What is the empirical formula of the compound?

Determine the empirical formula for a compound that is 70.79% carbon,8.91% hydrogen,4.59% nitrogen,and 15.72% oxygen.

In which set do all elements tend to form cations in binary ionic compounds?

How many moles of C3H8 contain 9.25 × 1024 molecules of C3H8?

The compound,Cu(N O2)2,is named

Write the formula for strontium nitride.

The molecular weight of nitrous oxide (N2O),known as laughing gas,is ________ amu (rounded to one decimal place).

Which of the following is one possible form of pentane?

Calculate the moles of Fe in 16.0 g of Fe2O3.

Which statement is true?

Determine the name for H2CO3.

Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.

Matter, Measurement, and Problem Solving

Atoms and Elements

Chemical Quantities and Aqueous Reactions

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

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

What is the empirical formula for Hg₂(NO₃)₂?

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

How many atoms of oxygen are contained in 47.6 g of Al₂(CO₃)₃? The molar mass of Al₂(CO₃)₃is 233.99 g/mol.

Write the name for Ca₃(PO₄)₂.

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of CO₂ and 0.1451 g of H₂O.What is the empirical formula of the compound?

How many moles of C₃H₈ contain 9.25 × 10²⁴ molecules of C₃H₈?

The compound,Cu(NO₂)₂,is named

The molecular weight of nitrous oxide (N₂O),known as laughing gas,is ________ amu (rounded to one decimal place).

Calculate the moles of Fe in 16.0 g of Fe₂O₃.

Determine the name for H₂CO₃.