Question 1

Hydrogen has three isotopes,  ,  ,and   
,which are called ________,________,and ________,respectively.

Accepted Answer

protium,de

Question 2

How many liters of O2 gas at 25°C and 1.00 atm pressure are needed to react with 120.5 grams of potassium hydride according to the chemical equation shown below?
2 KH(s)+ O2(g)→ H2O(g)+ K2O(s)

Accepted Answer

A) 18.4 L 
B) 36.7 L 
C) 73.5 L 
D) 147 L 
A) 18.4 L 
B) 36.7 L 
C) 73.5 L 
D) 147 L

Question 3

What is the anhydrous form of sulfuric acid,H2SO4?

Accepted Answer

A) SO2 
B) SO3 
C) SO32- 
D) SO42- 
A) SO2 
B) SO3 
C) SO32- 
D) SO42-

Question 4

In the following pictures representing binary hydrides AHS1U1B1xS1U1B0,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A.  
-The binary hydride shown in picture (4)is classified as

Accepted Answer

A) covalent. 
B) interstitial (metallic). 
C) ionic. 
D) None of these 
A) covalent. 
B) interstitial (metallic). 
C) ionic. 
D) None of these

Question 5

Write a balanced net ionic equation for the reaction of bromine with water.

Accepted Answer

A) 2 Br2(l)+ 2 H2O(l)→ O2(g)+ 4 HBr(aq) 
B) Br2(l)+ H2O(l)→ HOBr(aq)+ H+(aq)+ Br-(aq) 
C) Br2(l)+ 2 H2O(l)→ 2 HOBr(aq)+ H2(g) 
D) 2 Br2(g)+ 2 H2O(l)→ O2(g)+ 4 H+(aq)+ 4 Br-(aq) 
A) 2 Br2(l)+ 2 H2O(l)→ O2(g)+ 4 HBr(aq) 
B) Br2(l)+ H2O(l)→ HOBr(aq)+ H+(aq)+ Br-(aq) 
C) Br2(l)+ 2 H2O(l)→ 2 HOBr(aq)+ H2(g) 
D) 2 Br2(g)+ 2 H2O(l)→ O2(g)+ 4 H+(aq)+ 4 Br-(aq)

Question 6

What is the reaction of potassium peroxide in water?

Accepted Answer

A) 2 KO2(s)+ H2O(l)→ O2(g)+ 2 K+(aq)+ HO2-(aq)+ OH-(aq) 
B) K2O2(s)+ H2O(l)→ 2 K+(aq)+ HO2-(aq)+ OH-(aq) 
C) 2 K2O2(s)+ 2 H2O(l)→ 4 K+(aq)+ 4 OH-(aq)+ O2(g) 
D) K2O(s)+ H2O(l)→ 2 K+(aq)+ 2 OH-(aq) 
A) 2 KO2(s)+ H2O(l)→ O2(g)+ 2 K+(aq)+ HO2-(aq)+ OH-(aq) 
B) K2O2(s)+ H2O(l)→ 2 K+(aq)+ HO2-(aq)+ OH-(aq) 
C) 2 K2O2(s)+ 2 H2O(l)→ 4 K+(aq)+ 4 OH-(aq)+ O2(g) 
D) K2O(s)+ H2O(l)→ 2 K+(aq)+ 2 OH-(aq)

Question 7

Which of the following chemical reagents is not used in the purification of water?

Accepted Answer

A) NaNO3 
B) Cl2 
C) CaO 
D) Al2(SO4)3 
A) NaNO3 
B) Cl2 
C) CaO 
D) Al2(SO4)3

Question 8

The first step in the steam-hydrocarbon re-forming process for the industrial preparation of hydrogen is shown below.
H2O(g)+ CH4(g)   
CO(g)+ 3 H2(g)
In this reaction the atom that is oxidized is ________,which undergoes an oxidation number change from ________ to ________.

Accepted Answer

Question 9

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.400 M aqueous solution of KI according to the chemical equation shown below?
O3(g)+ 2 I-(aq)+ H2O(l)→ O2(g)+ I2(s)+ 2 OH-(aq)

Accepted Answer

A) 220.mL 
B) 441 mL 
C) 661 mL 
D) 881 mL 
A) 220.mL 
B) 441 mL 
C) 661 mL 
D) 881 mL

Question 10

How many grams of water are required to produce 5.50 L of hydrogen gas at 25.0°C and 755 mm Hg pressure according to the chemical equation shown below?
BaH2(s)+ 2 H2O(l)→ Ba(OH)2(aq)+ 2 H2(g)

Accepted Answer

A) 2)01 g 
B) 4)02 g 
C) 4)07 g 
D) 8)04 g 
A) 2)01 g 
B) 4)02 g 
C) 4)07 g 
D) 8)04 g

Question 11

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.100 M aqueous solution of KI according to the chemical equation shown below?
O3(g)+ 2 I-(aq)+ H2O(l)→ O2(g)+ I2(s)+ 2 OH-(aq)

Accepted Answer

A) 55.0 mL 
B) 110.mL 
C) 165 mL 
D) 220.mL 
A) 55.0 mL 
B) 110.mL 
C) 165 mL 
D) 220.mL

Question 12

-What group of elements is most likely to from ionic hydrides of the type MH2?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 13

Hydrogen,H2,has a very low boiling point.What is the force that must be overcome in order to boil hydrogen?

Accepted Answer

A) dipole-dipole 
B) H-H covalent bonding 
C) hydrogen bonding 
D) London dispersion 
A) dipole-dipole 
B) H-H covalent bonding 
C) hydrogen bonding 
D) London dispersion

Question 14

Which one of the following binary oxides is the most basic?

Accepted Answer

A) Na2O 
B) Al2O3 
C) P2O5 
D) SO3 
A) Na2O 
B) Al2O3 
C) P2O5 
D) SO3

Question 15

A 0.954-gram sample of hydrated magnesium sulfate,MgSO4∙ xH2O,is heated until all of the water is driven off.If 0.465 grams of anhydrous MgSO4 is obtained,how many water molecules combine with each formula unit of magnesium sulfate in the hydrate?

Accepted Answer

A) 5 
B) 6 
C) 7 
D) 8 
A) 5 
B) 6 
C) 7 
D) 8

Hydrogen has three isotopes, , ,and ,which are called ,,and ,respectively.

How many liters of O₂ gas at 25°C and 1.00 atm pressure are needed to react with 120.5 grams of potassium hydride according to the chemical equation shown below? 2 KH(s)+ O₂(g)→ H₂O(g)+ K₂O(s)

What is the anhydrous form of sulfuric acid,H₂SO₄?

In the following pictures representing binary hydrides AH_x,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A. -The binary hydride shown in picture (4)is classified as

Write a balanced net ionic equation for the reaction of bromine with water.

What is the reaction of potassium peroxide in water?

Which of the following chemical reagents is not used in the purification of water?

The first step in the steam-hydrocarbon re-forming process for the industrial preparation of hydrogen is shown below. H₂O(g)+ CH₄(g) CO(g)+ 3 H₂(g) In this reaction the atom that is oxidized is ,which undergoes an oxidation number change from to .

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.400 M aqueous solution of KI according to the chemical equation shown below? O₃(g)+ 2 I^-(aq)+ H₂O(l)→ O₂(g)+ I₂(s)+ 2 OH^-(aq)

How many grams of water are required to produce 5.50 L of hydrogen gas at 25.0°C and 755 mm Hg pressure according to the chemical equation shown below? BaH₂(s)+ 2 H₂O(l)→ Ba(OH)₂(aq)+ 2 H₂(g)

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.100 M aqueous solution of KI according to the chemical equation shown below? O₃(g)+ 2 I^-(aq)+ H₂O(l)→ O₂(g)+ I₂(s)+ 2 OH^-(aq)

-What group of elements is most likely to from ionic hydrides of the type MH₂?

Hydrogen,H₂,has a very low boiling point.What is the force that must be overcome in order to boil hydrogen?

Which one of the following binary oxides is the most basic?

A 0.954-gram sample of hydrated magnesium sulfate,MgSO₄∙ xH₂O,is heated until all of the water is driven off.If 0.465 grams of anhydrous MgSO₄ is obtained,how many water molecules combine with each formula unit of magnesium sulfate in the hydrate?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

Exam 18: Hydrogen, oxygen, and Water

Hydrogen has three isotopes, , ,and ,which are called ________,________,and ________,respectively.

How many liters of O2 gas at 25°C and 1.00 atm pressure are needed to react with 120.5 grams of potassium hydride according to the chemical equation shown below? 2 KH(s)+ O2(g)→ H2O(g)+ K2O(s)

What is the anhydrous form of sulfuric acid,H2SO4?

In the following pictures representing binary hydrides AHx,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A. -The binary hydride shown in picture (4)is classified as

Write a balanced net ionic equation for the reaction of bromine with water.

What is the reaction of potassium peroxide in water?

Which of the following chemical reagents is not used in the purification of water?

The first step in the steam-hydrocarbon re-forming process for the industrial preparation of hydrogen is shown below. H2O(g)+ CH4(g) CO(g)+ 3 H2(g) In this reaction the atom that is oxidized is ________,which undergoes an oxidation number change from ________ to ________.

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.400 M aqueous solution of KI according to the chemical equation shown below? O3(g)+ 2 I-(aq)+ H2O(l)→ O2(g)+ I2(s)+ 2 OH-(aq)

How many grams of water are required to produce 5.50 L of hydrogen gas at 25.0°C and 755 mm Hg pressure according to the chemical equation shown below? BaH2(s)+ 2 H2O(l)→ Ba(OH)2(aq)+ 2 H2(g)

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.100 M aqueous solution of KI according to the chemical equation shown below? O3(g)+ 2 I-(aq)+ H2O(l)→ O2(g)+ I2(s)+ 2 OH-(aq)

-What group of elements is most likely to from ionic hydrides of the type MH2?

Hydrogen,H2,has a very low boiling point.What is the force that must be overcome in order to boil hydrogen?

Which one of the following binary oxides is the most basic?

A 0.954-gram sample of hydrated magnesium sulfate,MgSO4∙ xH2O,is heated until all of the water is driven off.If 0.465 grams of anhydrous MgSO4 is obtained,how many water molecules combine with each formula unit of magnesium sulfate in the hydrate?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

Hydrogen has three isotopes, , ,and ,which are called ,,and ,respectively.

How many liters of O₂ gas at 25°C and 1.00 atm pressure are needed to react with 120.5 grams of potassium hydride according to the chemical equation shown below? 2 KH(s)+ O₂(g)→ H₂O(g)+ K₂O(s)

What is the anhydrous form of sulfuric acid,H₂SO₄?

In the following pictures representing binary hydrides AH_x,lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element,A. -The binary hydride shown in picture (4)is classified as

The first step in the steam-hydrocarbon re-forming process for the industrial preparation of hydrogen is shown below. H₂O(g)+ CH₄(g) CO(g)+ 3 H₂(g) In this reaction the atom that is oxidized is ,which undergoes an oxidation number change from to .

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.400 M aqueous solution of KI according to the chemical equation shown below? O₃(g)+ 2 I^-(aq)+ H₂O(l)→ O₂(g)+ I₂(s)+ 2 OH^-(aq)

How many grams of water are required to produce 5.50 L of hydrogen gas at 25.0°C and 755 mm Hg pressure according to the chemical equation shown below? BaH₂(s)+ 2 H₂O(l)→ Ba(OH)₂(aq)+ 2 H₂(g)

How many milliliters of ozone gas at at 25.0°C and 1.00 atm pressure are needed to react with 45.00 mL of a 0.100 M aqueous solution of KI according to the chemical equation shown below? O₃(g)+ 2 I^-(aq)+ H₂O(l)→ O₂(g)+ I₂(s)+ 2 OH^-(aq)

-What group of elements is most likely to from ionic hydrides of the type MH₂?

Hydrogen,H₂,has a very low boiling point.What is the force that must be overcome in order to boil hydrogen?

A 0.954-gram sample of hydrated magnesium sulfate,MgSO₄∙ xH₂O,is heated until all of the water is driven off.If 0.465 grams of anhydrous MgSO₄ is obtained,how many water molecules combine with each formula unit of magnesium sulfate in the hydrate?