Question 1

Given the reaction 2C3H8O + 9O2 → 6CO2 + 8H2O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C3H8O.

Accepted Answer

Question 2

Calculate the number of moles in 16.1 g of NaBr.

Accepted Answer

0.156 mol NaBr

Question 3

Assign the correct class name to each of the following reactions.
A) 2Fe + O2 → 2FeO
B) BaCl2(aq) + 2AgNO3(aq) → 2AgCl(s) + Ba(NO3)2(aq)
C) 2Al + 6HCl → 2AlCl3 + 3H2

Accepted Answer

synthesis; metathesi...

Question 4

Which of the following is NOT a naturally occurring diatomic molecule?

Accepted Answer

A)   N2
B)   Cl2
C)   I2
D)   S2
E)   Br2F) D) and E)
G) A) and B)

Question 5

Select the formula for the compound lead(II)  chloride, which is used to make ceramics.

Accepted Answer

A)   PbCl2
B)   Pb2Cl
C)   PbCl
D)   Pb2Cl2E) B) and D)
F) C) and D)

Question 6

Identify the best name for the compound AlCl3, which is used in deodorants to prevent sweating.

Accepted Answer

A)   aluminum chloride
B)   aluminum trichloride
C)   aluminum(III)  chloride
D)   monoaluminum trichlorideE) A) and B)
F) None of the above

Question 7

Which element, used in the production of transistors, is located in Period 5, Group 13?

Accepted Answer

A)   In
B)   Sn
C)   Tl
D)   YE) A) and B)
F) B) and C)

Question 8

Write the formula for the compound dioxygen difluoride, an extremely strong oxidant.

Accepted Answer

The answer of Write the formula for the compound dioxygen...

Question 9

Given the reaction B2H6 + O2 → HBO2 + H2O, calculate the number of grams of oxygen that will be needed to produce 2.5 moles of water.

Accepted Answer

Question 10

Calculate the molar mass of dichlorine heptoxide.

Accepted Answer

The answer of Calculate the molar mass of dichlorine heptoxide....

Question 11

Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank.
A) C5H12 _____
B) Fe(OH)3  _____
C) HClO3 _____
D) K3PO4 _____
E) (NH4)2SO4 _____

Accepted Answer

covalent; ...

Question 12

Calculate the number of moles in 19.2 g of calcium chloride.

Accepted Answer

0.173 mol CaCl₂

Question 13

Name the compound Fe2S3, a compound produced as a by-product of desulfurization of fuel.

Accepted Answer

A)   iron sulfite
B)   iron sulfide
C)   iron(III)  sulfide
D)   diiron trisulfideE) All of the above
F) A) and D)

Question 14

Rank the following compounds in order from lowest melting point to highest melting point: CaF2, MgO, NaCl

Accepted Answer

A)   MgO 2 
B)   CaF2 
C)   NaCl 2
D)   MgO 2
E)   NaCl 2 < MgOF) A) and C)
G) A) and E)

Question 15

Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl2 react with 3.88 g AgNO3, given the reaction CuCl2(aq) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2AgCl(s).

Accepted Answer

Question 16

Which of the following compounds is NOT a salt?

Accepted Answer

A)   KI
B)   CaCO3
C)   NH4Cl
D)   P2O5E) All of the above
F) None of the above

Question 17

Name the compound Ca(C2H3O2) 2, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Accepted Answer

A)   calcium bi(dicarbon trihydride dioxide) 
B)   calcium acetate
C)   calcium(II)  acetate
D)   calcium (dicarbon trihydride dioxide) E) None of the above
F) All of the above

Question 18

Balance the equation for the reaction of silver nitrate with potassium phosphate to form silver phosphate and potassium nitrate. Write the reaction and the coefficients.

Accepted Answer

3AgNO₃ + K₃P...

Question 19

Calculate the number of grams in 14.02 moles carbon tetrachloride.

Accepted Answer

The answer of Calculate the number of grams in 14.02...

Question 20

Identify the name for the compound SO3, a precursor for sulfuric acid.

Accepted Answer

A)   sulfur oxide
B)   sulfur trioxide
C)   sulfur(III)  oxide
D)   monosulfur trioxideE) A) and B)
F) B) and D) B

Exam 4: Chemical Evidence

Given the reaction 2C3H8O + 9O2 → 6CO2 + 8H2O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C3H8O.

Correct AnswerverifiedShow Answer

Calculate the number of moles in 16.1 g of NaBr.

Correct Answerverified0.156 mol NaBr

Assign the correct class name to each of the following reactions. A) 2Fe + O2 → 2FeO B) BaCl2(aq) + 2AgNO3(aq) → 2AgCl(s) + Ba(NO3)2(aq) C) 2Al + 6HCl → 2AlCl3 + 3H2

Correct Answerverifiedsynthesis; metathesi...View AnswerShow Answer

Which of the following is NOT a naturally occurring diatomic molecule?

Correct AnswerverifiedShow Answer

Select the formula for the compound lead(II) chloride, which is used to make ceramics.

Correct AnswerverifiedShow Answer

Identify the best name for the compound AlCl3, which is used in deodorants to prevent sweating.

Correct AnswerverifiedShow Answer

Which element, used in the production of transistors, is located in Period 5, Group 13?

Correct AnswerverifiedShow Answer

Write the formula for the compound dioxygen difluoride, an extremely strong oxidant.

Correct AnswerverifiedShow Answer

Given the reaction B2H6 + O2 → HBO2 + H2O, calculate the number of grams of oxygen that will be needed to produce 2.5 moles of water.

Correct AnswerverifiedShow Answer

Calculate the molar mass of dichlorine heptoxide.

Correct AnswerverifiedShow Answer

Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank. A) C5H12 _____ B) Fe(OH)3 _____ C) HClO3 _____ D) K3PO4 _____ E) (NH4)2SO4 _____

Correct Answerverifiedcovalent; ...View AnswerShow Answer

Calculate the number of moles in 19.2 g of calcium chloride.

Correct Answerverified0.173 mol CaCl2

Name the compound Fe2S3, a compound produced as a by-product of desulfurization of fuel.

Correct AnswerverifiedShow Answer

Rank the following compounds in order from lowest melting point to highest melting point: CaF2, MgO, NaCl

Correct AnswerverifiedShow Answer

Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl2 react with 3.88 g AgNO3, given the reaction CuCl2(aq) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2AgCl(s).

Correct AnswerverifiedShow Answer

Which of the following compounds is NOT a salt?

Correct AnswerverifiedShow Answer

Name the compound Ca(C2H3O2) 2, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Correct AnswerverifiedShow Answer

Balance the equation for the reaction of silver nitrate with potassium phosphate to form silver phosphate and potassium nitrate. Write the reaction and the coefficients.

Correct Answerverified3AgNO3 + K3P...View AnswerShow Answer

Calculate the number of grams in 14.02 moles carbon tetrachloride.

Correct AnswerverifiedShow Answer

Identify the name for the compound SO3, a precursor for sulfuric acid.

Correct AnswerverifiedB

Given the reaction 2C₃H₈O + 9O₂ → 6CO₂ + 8H₂O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C₃H₈O.

Correct Answer
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Correct Answer
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0.156 mol NaBr

Assign the correct class name to each of the following reactions. A) 2Fe + O₂ → 2FeO B) BaCl₂(aq) + 2AgNO₃(aq) → 2AgCl(s) + Ba(NO₃)₂(aq) C) 2Al + 6HCl → 2AlCl₃ + 3H₂

Correct Answer
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synthesis; metathesi...
View Answer

Correct Answer
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Correct Answer
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Identify the best name for the compound AlCl₃, which is used in deodorants to prevent sweating.

Correct Answer
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Correct Answer
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Correct Answer
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Given the reaction B₂H₆ + O₂ → HBO₂ + H₂O, calculate the number of grams of oxygen that will be needed to produce 2.5 moles of water.

Correct Answer
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Correct Answer
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Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank. A) C₅H_{12 _____} B) Fe(OH)₃_{_____} C) HClO_{3 _____} D) K₃PO_{4 _____} E) (NH₄)₂SO_{4 _____}

Correct Answer
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covalent; ...
View Answer

Correct Answer
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0.173 mol CaCl₂

Name the compound Fe₂S₃, a compound produced as a by-product of desulfurization of fuel.

Correct Answer
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Rank the following compounds in order from lowest melting point to highest melting point: CaF₂, MgO, NaCl

Correct Answer
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Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl₂ react with 3.88 g AgNO₃, given the reaction CuCl₂(aq) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2AgCl(s).

Correct Answer
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Correct Answer
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Name the compound Ca(C₂H₃O₂) ₂, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Correct Answer
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Correct Answer
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3AgNO₃ + K₃P...
View Answer

Correct Answer
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Identify the name for the compound SO₃, a precursor for sulfuric acid.

Correct Answer
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B