Question 1

Calculate the mass,in g,of 1.9 × 1024 atoms of Pb.

Accepted Answer

A) 3.9 × 102 g 
B) 2.4 × 102 g 
C) 3.2 × 102 g 
D) 1.5 × 102 g 
E) 6.5 × 102 g 
A) 3.9 × 102 g 
B) 2.4 × 102 g 
C) 3.2 × 102 g 
D) 1.5 × 102 g 
E) 6.5 × 102 g

Question 2

An atom of 118Xe contains ________ neutrons.

Accepted Answer

A) 54 
B) 172 
C) 64 
D) 110 
E) 118 
A) 54 
B) 172 
C) 64 
D) 110 
E) 118

Question 3

Determine the number of protons,neutrons and electrons in the following: 
  X

Accepted Answer

A) p+ = 36 n° = 29 e- = 36 
B) p+ = 29 n° = 29 e- = 36 
C) p+ = 36 n° = 36 e- = 29 
D) p+ = 29 n° = 36 e- = 29 
E) p+ = 29 n° = 36 e- = 36 
A) p+ = 36 n° = 29 e- = 36 
B) p+ = 29 n° = 29 e- = 36 
C) p+ = 36 n° = 36 e- = 29 
D) p+ = 29 n° = 36 e- = 29 
E) p+ = 29 n° = 36 e- = 36

Question 4

Which set has the same number of protons?

Accepted Answer

A) Br,Br-,Br+ 
B) N,O,F 
C) Na+,Mg2+,Al3+ 
D) K+,Rb+,Cs+ 
A) Br,Br-,Br+ 
B) N,O,F 
C) Na+,Mg2+,Al3+ 
D) K+,Rb+,Cs+

Question 5

How many Li atoms are contained in 97.9 g of Li?

Accepted Answer

A) 5.90 × 1025 Li atoms 
B) 7.09 × 1021 Li atoms 
C) 8.49 × 1024 Li atoms 
D) 4.27 × 1022 Li atoms 
E) 4.18 × 1024 Li atoms 
A) 5.90 × 1025 Li atoms 
B) 7.09 × 1021 Li atoms 
C) 8.49 × 1024 Li atoms 
D) 4.27 × 1022 Li atoms 
E) 4.18 × 1024 Li atoms

Question 6

Give the number of electrons for carbon-14,with a -2 charge.

Accepted Answer

A) 7 
B) 4 
C) 6 
D) 8 
A) 7 
B) 4 
C) 6 
D) 8

Question 7

All of the following elements are nonmetals except

Accepted Answer

A) barium. 
B) carbon. 
C) hydrogen. 
D) oxygen. 
A) barium. 
B) carbon. 
C) hydrogen. 
D) oxygen.

Question 8

Which of the following statements about subatomic particles is true?

Accepted Answer

A) A neutral atom contains the same number of protons and electrons. 
B) Protons have about the same mass as electrons. 
C) Electrons make up most of the mass of an atom. 
D) Protons and neutrons have opposite,but equal in magnitude,charges. 
E) Neutrons and electrons are found in the nucleus of an atom. 
A) A neutral atom contains the same number of protons and electrons. 
B) Protons have about the same mass as electrons. 
C) Electrons make up most of the mass of an atom. 
D) Protons and neutrons have opposite,but equal in magnitude,charges. 
E) Neutrons and electrons are found in the nucleus of an atom.

Question 9

What mass,in kg,does 5.84 moles of titanium (Ti)have?

Accepted Answer

A) 0.352 kg 
B) 0.122 kg 
C) 0.820 kg 
D) 0.280 kg 
E) 0.632 kg 
A) 0.352 kg 
B) 0.122 kg 
C) 0.820 kg 
D) 0.280 kg 
E) 0.632 kg

Question 10

Which of the following elements is a noble gas?

Accepted Answer

A) Ar 
B) Br 
C) N 
D) O 
E) K 
A) Ar 
B) Br 
C) N 
D) O 
E) K

Question 11

Give the name of the element whose symbol is Na.

Accepted Answer

The answer of Give the name of the element whose...

Question 12

Why doesn't a mass spectrum of silver have a peak at 107.9 amu?

Accepted Answer

The average atomic mass of sil

Question 13

Which of the following statements is false?

Accepted Answer

A) Anions are usually larger than their corresponding atom. 
B) Metals tend to form cations. 
C) Atoms are usually larger than their corresponding cation. 
D) The halogens tend to form 1+ ions. 
E) Nonmetals tend to gain electrons. 
A) Anions are usually larger than their corresponding atom. 
B) Metals tend to form cations. 
C) Atoms are usually larger than their corresponding cation. 
D) The halogens tend to form 1+ ions. 
E) Nonmetals tend to gain electrons.

Question 14

Which of the following statements is false?

Accepted Answer

A) Halogens are very reactive elements. 
B) The alkali metals are fairly unreactive. 
C) Sulfur is a main group element. 
D) Noble gases do not usually form ions. 
E) Zn is a transition metal. 
A) Halogens are very reactive elements. 
B) The alkali metals are fairly unreactive. 
C) Sulfur is a main group element. 
D) Noble gases do not usually form ions. 
E) Zn is a transition metal.

Question 15

How many electrons are in the ion,Cu2+?

Accepted Answer

A) 27 
B) 29 
C) 31 
D) 64 
A) 27 
B) 29 
C) 31 
D) 64

Question 16

Silver has an atomic mass of 107.868 amu.The Ag-109 isotope (108.905 amu)is 48.16%.What is the amu of the other isotope?

Accepted Answer

A) 106.905 amu 
B) 106.908 amu 
C) 106.903 amu 
D) 106.911 amu 
A) 106.905 amu 
B) 106.908 amu 
C) 106.903 amu 
D) 106.911 amu

Question 17

Which of the following statements is false according to Dalton's Atomic Theory?

Accepted Answer

A) Atoms combine in simple whole number ratios to form compounds. 
B) All atoms of chlorine have identical properties that distinguish them from other elements. 
C) One carbon atom will combine with one oxygen atom to form a molecule of carbon monoxide. 
D) Atoms of sodium do not change into another element during chemical reaction with chlorine. 
E) An atom of nitrogen can be broken down into smaller particles that will still have the unique properties of nitrogen. 
A) Atoms combine in simple whole number ratios to form compounds. 
B) All atoms of chlorine have identical properties that distinguish them from other elements. 
C) One carbon atom will combine with one oxygen atom to form a molecule of carbon monoxide. 
D) Atoms of sodium do not change into another element during chemical reaction with chlorine. 
E) An atom of nitrogen can be broken down into smaller particles that will still have the unique properties of nitrogen.

Question 18

Which element has the chemical symbol,S?

Accepted Answer

A) selenium 
B) silicon 
C) sulfur 
D) scandium 
A) selenium 
B) silicon 
C) sulfur 
D) scandium

Question 19

What does "X" represent in the following symbol? 
  X

Accepted Answer

A) mercury 
B) chlorine 
C) scandium 
D) bromine 
E) selenium 
A) mercury 
B) chlorine 
C) scandium 
D) bromine 
E) selenium

Question 20

How many moles of Kr are contained in 398 mg of Kr?

Accepted Answer

A) 4.75 × 10-3 moles Kr 
B) 33.4 moles Kr 
C) 2.11 × 10-4 moles Kr 
D) 2.99 × 10-3 moles Kr 
E) 1.19 × 10-4 moles Kr 
A) 4.75 × 10-3 moles Kr 
B) 33.4 moles Kr 
C) 2.11 × 10-4 moles Kr 
D) 2.99 × 10-3 moles Kr 
E) 1.19 × 10-4 moles Kr

Calculate the mass,in g,of 1.9 × 10²⁴ atoms of Pb.

An atom of ¹¹⁸Xe contains ________ neutrons.

Determine the number of protons,neutrons and electrons in the following: X

Which set has the same number of protons?

How many Li atoms are contained in 97.9 g of Li?

Give the number of electrons for carbon-14,with a -2 charge.

All of the following elements are nonmetals except

Which of the following statements about subatomic particles is true?

What mass,in kg,does 5.84 moles of titanium (Ti)have?

Which of the following elements is a noble gas?

Give the name of the element whose symbol is Na.

Why doesn't a mass spectrum of silver have a peak at 107.9 amu?

Which of the following statements is false?

Which of the following statements is false?

How many electrons are in the ion,Cu²⁺?

Silver has an atomic mass of 107.868 amu.The Ag-109 isotope (108.905 amu)is 48.16%.What is the amu of the other isotope?

Which of the following statements is false according to Dalton's Atomic Theory?

Which element has the chemical symbol,S?

What does "X" represent in the following symbol? X

How many moles of Kr are contained in 398 mg of Kr?

Matter, Measurement, and Problem Solving

Molecules, Compounds and Chemical Equations

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

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Exam 2: Atoms and Elements

Calculate the mass,in g,of 1.9 × 1024 atoms of Pb.

An atom of 118Xe contains ________ neutrons.

Determine the number of protons,neutrons and electrons in the following: X

Which set has the same number of protons?

How many Li atoms are contained in 97.9 g of Li?

Give the number of electrons for carbon-14,with a -2 charge.

All of the following elements are nonmetals except

Which of the following statements about subatomic particles is true?

What mass,in kg,does 5.84 moles of titanium (Ti)have?

Which of the following elements is a noble gas?

Give the name of the element whose symbol is Na.

Why doesn't a mass spectrum of silver have a peak at 107.9 amu?

Which of the following statements is false?

Which of the following statements is false?

How many electrons are in the ion,Cu2+?

Silver has an atomic mass of 107.868 amu.The Ag-109 isotope (108.905 amu)is 48.16%.What is the amu of the other isotope?

Which of the following statements is false according to Dalton's Atomic Theory?

Which element has the chemical symbol,S?

What does "X" represent in the following symbol? X

How many moles of Kr are contained in 398 mg of Kr?

Matter, Measurement, and Problem Solving

Molecules, Compounds and Chemical Equations

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

Calculate the mass,in g,of 1.9 × 10²⁴ atoms of Pb.

An atom of ¹¹⁸Xe contains ________ neutrons.

How many electrons are in the ion,Cu²⁺?