Question 1

Which of the following has the largest mass of oxygen ?

Accepted Answer

A) 16.0 g of O2 
B) 0.500 mol of O2 
C) 2 moles of O atoms 
D) 10 grams of carbon dioxide CO2 
E) All of these have the same mass of oxygen. 
A) 16.0 g of O2 
B) 0.500 mol of O2 
C) 2 moles of O atoms 
D) 10 grams of carbon dioxide CO2 
E) All of these have the same mass of oxygen. C

Question 2

What is the correct name of K2O?

Accepted Answer

A) Dipotassium monoxide 
B) Dipotassium oxide 
C) Potassium monoxide 
D) Potassium oxygen 
E) Potassium oxide 
A) Dipotassium monoxide 
B) Dipotassium oxide 
C) Potassium monoxide 
D) Potassium oxygen 
E) Potassium oxide E

Question 3

For the reaction:    4NH3 + 5O2 ® 6H2O + 4NO
If 125.0 g of NH3 is reacted with 225.0 g of O2, how many grams of H2O will be present after a complete reaction?

Accepted Answer

A) 0 grams 
B) 151.9 grams 
C) 198.5 grams 
D) 350.0 grams 
A) 0 grams 
B) 151.9 grams 
C) 198.5 grams 
D) 350.0 grams B

Question 4

Which statement about ionic compounds is incorrect ?

Accepted Answer

A) Ionic compounds include table salt, calcium carbonate, and sodium bicarbonate . 
B) Ionic solids dissolved in water will conduct electricity. 
C) Ionic bonds are formed between metals and nonmetals. 
D) Ionic bonds involve the sharing of electrons by metals and nonmetals. 
E) Ionic compounds are held together by attraction between positive and negative ions. 
A) Ionic compounds include table salt, calcium carbonate, and sodium bicarbonate . 
B) Ionic solids dissolved in water will conduct electricity. 
C) Ionic bonds are formed between metals and nonmetals. 
D) Ionic bonds involve the sharing of electrons by metals and nonmetals. 
E) Ionic compounds are held together by attraction between positive and negative ions.

Question 5

How many atoms of aluminum are contained in a 36.0 ounce aluminum bat? 1 ounce = 28.35 grams

Accepted Answer

A) 2.28 × 1025 
B) 6.28 × 10 − 23 
C) 6.15 × 1026 
D) 6.33 × 1023 
E) Can't tell from the given information 
A) 2.28 × 1025 
B) 6.28 × 10 − 23 
C) 6.15 × 1026 
D) 6.33 × 1023 
E) Can't tell from the given information

Question 6

Which of these is the correct formula for potassium phosphate?

Accepted Answer

A) KPO4 
B) K3PO4 
C) K(PO4)3 
D) K2(PO4)3 
E) K3P 
A) KPO4 
B) K3PO4 
C) K(PO4)3 
D) K2(PO4)3 
E) K3P

Question 7

When properly balanced, what are the correct coefficients for the reaction: H2 + O2 → H2O?

Accepted Answer

A) 1,1,1 
B) 1,1\2,1 
C) 1,2,1 
D) 2,1,2 
E) 10,5,10 
A) 1,1,1 
B) 1,1\2,1 
C) 1,2,1 
D) 2,1,2 
E) 10,5,10

Question 8

Automotive air bags inflate when a sample of NaN3 (molar mass = 65 g\mol)is rapidly decomposed. What mass of NaN3 is required to produce 368 L of nitrogen gas (molar mass = 28 g\mol)with a density of 1.25 g\L?
2NaN3(s)→ 2Na(s)+ 3N2(g)

Accepted Answer

A) 228 g 
B) 712 g 
C) 1709 g 
D) 2136 g 
E) 3203 g 
A) 228 g 
B) 712 g 
C) 1709 g 
D) 2136 g 
E) 3203 g

Question 9

Which of these is the correct name for Li2SO4?

Accepted Answer

A) Lithium sulfide 
B) Dilithium sulfide 
C) Dilithium sulfate 
D) Lithium sulfate 
E) Dilithium tetrasulfide 
A) Lithium sulfide 
B) Dilithium sulfide 
C) Dilithium sulfate 
D) Lithium sulfate 
E) Dilithium tetrasulfide

Question 10

An international group of zookeepers with successful breeding programs made the following animal exchanges last year. Using the same bartering system, how many monkeys can a zoo obtain in exchange for 10 camels?

Accepted Answer

A) 6 monkeys 
B) 12 monkeys 
C) 15 monkeys 
D) 24 monkeys 
E) 30 monkeys 
A) 6 monkeys 
B) 12 monkeys 
C) 15 monkeys 
D) 24 monkeys 
E) 30 monkeys

Question 11

What is the molecular weight of PCl3?

Accepted Answer

A) 66.5 amu 
B) 106.5 amu 
C) 137.5 amu 
D) 180 amu 
E) 360 amu 
A) 66.5 amu 
B) 106.5 amu 
C) 137.5 amu 
D) 180 amu 
E) 360 amu

Question 12

How many chromium atoms are in 78.8 g or K2Cr2O7?

Accepted Answer

A) 2.24 × 1024 atoms 
B) 1.12 × 1024 atoms 
C) 3.23 × 1023 atoms 
D) 1.61 × 1023 atoms 
E) 2.25 × 1022 atoms 
A) 2.24 × 1024 atoms 
B) 1.12 × 1024 atoms 
C) 3.23 × 1023 atoms 
D) 1.61 × 1023 atoms 
E) 2.25 × 1022 atoms

Question 13

How many hydrogen atoms are in 25.6 grams of sucrose, (C12H22O11)?

Accepted Answer

A) 1.647 atoms 
B) 2.6 × 1023 atoms 
C) 4.51 × 1022 atoms 
D) 6.02 × 1023 atoms 
E) 9.92 × 1023 atoms 
A) 1.647 atoms 
B) 2.6 × 1023 atoms 
C) 4.51 × 1022 atoms 
D) 6.02 × 1023 atoms 
E) 9.92 × 1023 atoms

Question 14

Which of these is an ionic compound?

Accepted Answer

A) NCl3 
B) Li2O 
C) PF5 
D) CH4 
E) I2 
A) NCl3 
B) Li2O 
C) PF5 
D) CH4 
E) I2

Question 15

Which of these will not form a negative ion in an ionic compound?

Accepted Answer

A) Br 
B) N 
C) Se 
D) I 
E) Al 
A) Br 
B) N 
C) Se 
D) I 
E) Al

Question 16

The correct formula for the sulfate ion is:

Accepted Answer

A) SO3 −  
B) SO3 2−  
C) SO4 −  
D) SO4 2−  
E) none of the above 
A) SO3 −  
B) SO3 2−  
C) SO4 −  
D) SO4 2−  
E) none of the above

Question 17

Which of the following is not true for 3 moles of CaCO3?

Accepted Answer

A) It contains 3 moles of O. 
B) It contains 3 moles of Ca. 
C) It contains 3 moles of C. 
D) It contains 9 moles of O. 
E) None of the above. 
A) It contains 3 moles of O. 
B) It contains 3 moles of Ca. 
C) It contains 3 moles of C. 
D) It contains 9 moles of O. 
E) None of the above.

Question 18

Which of these is the correct name for N2O3?

Accepted Answer

A) Nitrogen trioxide 
B) Trinitrogen dioxide 
C) Dinitrogen trioxide 
D) Nitrogen dioxygenide 
E) Dinitrogenide dioxygenide 
A) Nitrogen trioxide 
B) Trinitrogen dioxide 
C) Dinitrogen trioxide 
D) Nitrogen dioxygenide 
E) Dinitrogenide dioxygenide

Question 19

Which of these is the correct chemical formula for carbon tetrachloride?

Accepted Answer

A) CCl3 
B) CCl4 
C) CCl5 
D) C4Cl 
E) None of the above 
A) CCl3 
B) CCl4 
C) CCl5 
D) C4Cl 
E) None of the above

Question 20

Which of these is the correct name for Ca(OH)2?

Accepted Answer

A) Calcium carbonate 
B) Calcium oxide 
C) Calcium dihydride 
D) Calcium oxygen hydride 
E) Calcium hydroxide 
A) Calcium carbonate 
B) Calcium oxide 
C) Calcium dihydride 
D) Calcium oxygen hydride 
E) Calcium hydroxide

Which of the following has the largest mass of oxygen ?

What is the correct name of K₂O?

For the reaction: 4NH₃ + 5O₂ ® 6H₂O + 4NO If 125.0 g of NH₃ is reacted with 225.0 g of O₂, how many grams of H₂O will be present after a complete reaction?

Which statement about ionic compounds is incorrect ?

How many atoms of aluminum are contained in a 36.0 ounce aluminum bat? 1 ounce = 28.35 grams

Which of these is the correct formula for potassium phosphate?

When properly balanced, what are the correct coefficients for the reaction: H₂ + O₂ → H₂O?

Automotive air bags inflate when a sample of NaN₃ (molar mass = 65 g\mol)is rapidly decomposed. What mass of NaN₃ is required to produce 368 L of nitrogen gas (molar mass = 28 g\mol)with a density of 1.25 g\L? 2NaN₃(s)→ 2Na(s)+ 3N₂(g)

Which of these is the correct name for Li₂SO₄?

An international group of zookeepers with successful breeding programs made the following animal exchanges last year. Using the same bartering system, how many monkeys can a zoo obtain in exchange for 10 camels?

What is the molecular weight of PCl₃?

How many chromium atoms are in 78.8 g or K₂Cr₂O₇?

How many hydrogen atoms are in 25.6 grams of sucrose, (C₁₂H₂₂O₁₁)?

Which of these is an ionic compound?

Which of these will not form a negative ion in an ionic compound?

The correct formula for the sulfate ion is:

Which of the following is not true for 3 moles of CaCO₃?

Which of these is the correct name for N₂O₃?

Which of these is the correct chemical formula for carbon tetrachloride?

Which of these is the correct name for Ca(OH)₂?

Molecular Reasons

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Chemical Bonding

Organic Chemistry

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The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

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The Chemistry of Food

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Exam 4: Molecules, Compounds, and Chemical Reactions

Which of the following has the largest mass of oxygen ?

What is the correct name of K2O?

For the reaction: 4NH3 + 5O2 ® 6H2O + 4NO If 125.0 g of NH3 is reacted with 225.0 g of O2, how many grams of H2O will be present after a complete reaction?

Which statement about ionic compounds is incorrect ?

How many atoms of aluminum are contained in a 36.0 ounce aluminum bat? 1 ounce = 28.35 grams

Which of these is the correct formula for potassium phosphate?

When properly balanced, what are the correct coefficients for the reaction: H2 + O2 → H2O?

Automotive air bags inflate when a sample of NaN3 (molar mass = 65 g\mol)is rapidly decomposed. What mass of NaN3 is required to produce 368 L of nitrogen gas (molar mass = 28 g\mol)with a density of 1.25 g\L? 2NaN3(s)→ 2Na(s)+ 3N2(g)

Which of these is the correct name for Li2SO4?

An international group of zookeepers with successful breeding programs made the following animal exchanges last year. Using the same bartering system, how many monkeys can a zoo obtain in exchange for 10 camels?

What is the molecular weight of PCl3?

How many chromium atoms are in 78.8 g or K2Cr2O7?

How many hydrogen atoms are in 25.6 grams of sucrose, (C12H22O11)?

Which of these is an ionic compound?

Which of these will not form a negative ion in an ionic compound?

The correct formula for the sulfate ion is:

Which of the following is not true for 3 moles of CaCO3?

Which of these is the correct name for N2O3?

Which of these is the correct chemical formula for carbon tetrachloride?

Which of these is the correct name for Ca(OH)2?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters

What is the correct name of K₂O?

For the reaction: 4NH₃ + 5O₂ ® 6H₂O + 4NO If 125.0 g of NH₃ is reacted with 225.0 g of O₂, how many grams of H₂O will be present after a complete reaction?

When properly balanced, what are the correct coefficients for the reaction: H₂ + O₂ → H₂O?

Automotive air bags inflate when a sample of NaN₃ (molar mass = 65 g\mol)is rapidly decomposed. What mass of NaN₃ is required to produce 368 L of nitrogen gas (molar mass = 28 g\mol)with a density of 1.25 g\L? 2NaN₃(s)→ 2Na(s)+ 3N₂(g)

Which of these is the correct name for Li₂SO₄?

What is the molecular weight of PCl₃?

How many chromium atoms are in 78.8 g or K₂Cr₂O₇?

How many hydrogen atoms are in 25.6 grams of sucrose, (C₁₂H₂₂O₁₁)?

Which of the following is not true for 3 moles of CaCO₃?

Which of these is the correct name for N₂O₃?

Which of these is the correct name for Ca(OH)₂?