Question 1

Match between columns
                        Premises: neon
oxygen
iodine
chlorine
calcium
hydrogen

Accepted Answer

The Answer of Ca₂(s) and Ne(g) and I₂(s) and H(g) is...

Question 2

What mass of bromine trifluoride,BrF3,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF2?

Accepted Answer

A)   1.69 g
B)   16.7 g
C)   42.3 g
D)   95.1 gE) B) and C)
F) A) and B)

Question 3

What is the molar mass of chlorine gas?

Accepted Answer

A)   35.5 g/mol
B)   70.9 g/mol
C)   6.02 × 1023 g/mol
D)   1.20 × 1023 g/molE) None of the above
F) A) and B)

Question 4

Calculate the mass percent composition of oxygen in Al2(SO4)3.

Accepted Answer

Question 5

How many molecules of butane are contained in 25.0 mL of butane? The density of butane is 0.6011 g/mL and the molar mass is 58.12 g/mol.

Accepted Answer

A)   2.59 × 1023 molecules butane
B)   1.46 × 1027 molecules butane
C)   6.87 × 1023 molecules butane
D)   1.56 × 1023 molecules butane
E)   7.14 × 1025 molecules butaneF) None of the above
G) A) and D)

Question 6

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)   C17H26NO3E) All of the above
F) None of the above

Question 7

Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.

Accepted Answer

A)   Al(C2H3O2) 2(aq)  + (NH4) 2PO4(aq)  → AlPO4(s)  + 2 NH4C2H3O2(aq) 
B)   Al(C2H3O2) 2(aq)  + (NH3) 2PO4(aq)  → AlPO4(s)  + 2 NH3C2H3O2(aq) 
C)   Al(CO3) 2(aq)  + (NH3) 2PO4(aq)  → AlPO4(s)  + 2 NH3CO3(aq) 
D)   Al(C2H3O2) 3(aq)  + (NH4) 3PO4(aq)  → AlPO4(s)  + 3 NH4C2H3O2(aq) 
E)   Al(CO2) 3(aq)  + (NH4) 3PO3(aq)  → AlPO3(s)  + 3 NH4CO2(aq) F) C) and D)
G) A) and B)

Question 8

Give the name for H2SO4.

Accepted Answer

A)   sulfuric acid
B)   persulfurous acid
C)   sulfurous acid
D)   hyposulfurous acid
E)   persulfuric acidF) C) and D)
G) A) and B)

Question 9

Write the name for SnS.

Accepted Answer

A)   tin(I)  sulfate
B)   tin(I)  sulfide
C)   tin(II)  sulfide
D)   tin(II)  sulfate
E)   tin sulfideF) C) and E)
G) None of the above

Question 10

Give the structure for lithium hypochlorite.

Accepted Answer

A)   LiClO
B)   LiClO2
C)   LiClO3
D)   LiClO4
E)   Li2ClO F) B) and D)
G) B) and C)

Question 11

Give the name for H2CO3.

Accepted Answer

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

Question 12

How many moles of C5H12 contain 9.25 × 1024 molecules of C5H12?

Accepted Answer

A)   65.1 moles C5H12
B)   28.6 moles C5H12
C)   34.9 moles C5H12
D)   46.2 moles C5H12
E)   15.4 moles C5H12F) A) and C)
G) A) and D)

Question 13

Give the name for HNO2.

Accepted Answer

Question 14

How many millimoles of Ca(NO3) 2 contain 4.78 × 1022 formula units of Ca(NO3) 2? The molar mass of Ca(NO3) 2 is 164.10 g/mol.

Accepted Answer

A)   12.6 mmol Ca(NO3) 2
B)   13.0 mmol Ca(NO3) 2
C)   20.7 mmol Ca(NO3) 2
D)   79.4 mmol Ca(NO3) 2
E)   57.0 mmol Ca(NO3) 2F) A) and E)
G) A) and B)

Question 15

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

Accepted Answer

A)   Li, Sn, O
B)   Ca, Zn, Sn
C)   N, As, Bi
D)   S, F, BrE) B) and C)
F) A) and D)

Question 16

Why aren't prefixes used in naming ionic compounds?

Accepted Answer

The charges on the ions dictat...

Question 17

How many SO32- ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g/mol.

Accepted Answer

A)   1.52 × 1027 SO3 ions
B)   4.76 × 1020 SO3 ions
C)   2.10 × 1021 SO3 ions
D)   1.05 × 1021 SO3 ions
E)   9.52 × 1020 SO3 ionsF) A) and B)
G) None of the above

Question 18

What is the mass (in kg) of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

Accepted Answer

A)   3.85 kg
B)   5.04 kg
C)   2.60 kg
D)   3.03 kg
E)   6.39 kgF) A) and B)
G) None of the above

Question 19

The chemical formula for the iodite ion is

Accepted Answer

A)   I-.
B)   I3-.
C)   IO2-.
D)   IO3-.E) All of the above
F) B) and C)

Question 20

Give the name for KHSO3.

Accepted Answer

A)   monopotassium sulfite
B)   potassium sulfate
C)   potassium hydrogen sulfate
D)   potassium hydrogen sulfite
E)   potassium disulfiteF) C) and D)
G) A) and C)

Exam 3: Molecules,compounds,and Chemical Equations

What is the molar mass of chlorine gas?

Correct Answer
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How many molecules of butane are contained in 25.0 mL of butane? The density of butane is 0.6011 g/mL and the molar mass is 58.12 g/mol.

Correct Answer
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Match the following.

Why aren't prefixes used in naming ionic compounds?

Correct Answer
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The charges on the ions dictat...
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What is the mass (in kg) of 6.89 × 10²⁵molecules of CO₂? The molar mass of CO₂ is 44.01 g/mol.

Correct Answer
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How many millimoles of Ca(NO₃) ₂ contain 4.78 × 10²² formula units of Ca(NO₃) ₂? The molar mass of Ca(NO₃) ₂ is 164.10 g/mol.

Correct Answer
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How many SO₃^2- ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃is 126.05 g/mol.

Correct Answer
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Give the structure for lithium hypochlorite.

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

Correct Answer
verified

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

Correct Answer
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The chemical formula for the iodite ion is

Correct Answer
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Give the name for HNO₂.

Correct Answer
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What mass of bromine trifluoride,BrF₃,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF₂?

Correct Answer
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Give the name for H₂SO₄.

Correct Answer
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Give the name for H₂CO₃.

Correct Answer
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Calculate the mass percent composition of oxygen in Al₂(SO₄)₃.

Correct Answer
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Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.

Correct Answer
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Give the name for KHSO₃.

Correct Answer
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Write the name for SnS.

Correct Answer
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How many moles of C₅H₁₂ contain 9.25 × 10²⁴ molecules of C₅H₁₂?

Correct Answer
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Exam 3: Molecules,compounds,and Chemical Equations

What is the molar mass of chlorine gas?

Correct AnswerverifiedShow Answer

How many molecules of butane are contained in 25.0 mL of butane? The density of butane is 0.6011 g/mL and the molar mass is 58.12 g/mol.

Correct AnswerverifiedShow Answer

Match the following.

Why aren't prefixes used in naming ionic compounds?

Correct AnswerverifiedThe charges on the ions dictat...View AnswerShow Answer

What is the mass (in kg) of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

Correct AnswerverifiedShow Answer

How many millimoles of Ca(NO3) 2 contain 4.78 × 1022 formula units of Ca(NO3) 2? The molar mass of Ca(NO3) 2 is 164.10 g/mol.

Correct AnswerverifiedShow Answer

How many SO32- ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05 g/mol.

Correct AnswerverifiedShow Answer

Give the structure for lithium hypochlorite.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The chemical formula for the iodite ion is

Correct AnswerverifiedShow Answer

Give the name for HNO2.

Correct AnswerverifiedShow Answer

What mass of bromine trifluoride,BrF3,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF2?

Correct AnswerverifiedShow Answer

Give the name for H2SO4.

Correct AnswerverifiedShow Answer

Give the name for H2CO3.

Correct AnswerverifiedShow Answer

Calculate the mass percent composition of oxygen in Al2(SO4)3.

Correct AnswerverifiedShow Answer

Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.

Correct AnswerverifiedShow Answer

Give the name for KHSO3.

Correct AnswerverifiedShow Answer

Write the name for SnS.

Correct AnswerverifiedShow Answer

How many moles of C5H12 contain 9.25 × 1024 molecules of C5H12?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
verified
The charges on the ions dictat...
View Answer

What is the mass (in kg) of 6.89 × 10²⁵molecules of CO₂? The molar mass of CO₂ is 44.01 g/mol.

Correct Answer
verified

How many millimoles of Ca(NO₃) ₂ contain 4.78 × 10²² formula units of Ca(NO₃) ₂? The molar mass of Ca(NO₃) ₂ is 164.10 g/mol.

Correct Answer
verified

How many SO₃^2- ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃is 126.05 g/mol.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Give the name for HNO₂.

Correct Answer
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What mass of bromine trifluoride,BrF₃,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF₂?

Correct Answer
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Give the name for H₂SO₄.

Correct Answer
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Give the name for H₂CO₃.

Correct Answer
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Calculate the mass percent composition of oxygen in Al₂(SO₄)₃.

Correct Answer
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Correct Answer
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Give the name for KHSO₃.

Correct Answer
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Correct Answer
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How many moles of C₅H₁₂ contain 9.25 × 10²⁴ molecules of C₅H₁₂?

Correct Answer
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