Question 1

Which one of the following compounds contains ionic bonds?

Accepted Answer

A)  SrO
B)  HBr
C)  PBr3
D)  SiO2

Question 2

How many moles of C3H8 contain 4.95 × 1024 hydrogen atoms?

Accepted Answer

A)  8.22 moles C3H8
B)  6.58 moles C3H8
C)  1.03 moles C3H8
D)  9.73 moles C3H8
E)  3.09 moles C3H8

Question 3

Which of the following is an atomic element?

Accepted Answer

A)  Br
B)  H
C)  N
D)  O
E)  Mg E

Question 4

What is the chemical formula for calcium hydroxide?

Accepted Answer

A)  CaH2
B)  CaOH
C)  CaOH2
D)  Ca(OH) 2

Question 5

Identify a hydrocarbon.

Accepted Answer

A)  CH3CH2OCH2CH3
B)  CH3CH2OH
C)  CH3CH2NH2
D)  CH3CH2CH2CH3
E)  CH3COOH

Question 6

When forming ionic compounds,cations and anions form three-dimensional networks known as

Accepted Answer

A)  a molecular compound.
B)  a space-filling compound.
C)  a lattice.
D)  an empirical formula.

Question 7

Which of the following is a molecular compound?

Accepted Answer

A)  NaCN
B)  LiOH
C)  SrI2
D)  ZnS
E)  P4O10

Question 8

Identify the perchlorate ion.

Accepted Answer

A)   ClO2−\mathrm { ClO } _ { 2 } ^ { - }ClO2−​ 
B)   ClO3−\mathrm { ClO } _ { 3 } ^ { - }ClO3−​ 
C)   ClO4−\mathrm { ClO } _ { 4 } ^ { - }ClO4−​ 
D)   ClO−\mathrm { ClO } ^ { - }ClO− 
E)    Cl−\mathrm { Cl } ^ { - }Cl−

Question 9

Determine the molecular 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)  C17H26NO3 A

Question 10

Determine the molecular formula of a compound that has a molar mass of 92.0 g mol-1 and an empirical formula of NO2.

Accepted Answer

A)  N2O3
B)  N3O6
C)  N2O4
D)  NO2
E)  N2O5

Question 11

Identify a carboxylic acid.

Accepted Answer

A)  CH3CH2OCH2CH3
B)  CH3CH2OH
C)  CH3CH2NH2
D)  CH3CH2CH2CH3
E)  CH3COOH

Question 12

Identify the name for the compound Fe(C2H3O2) 2.

Accepted Answer

A)  iron(II) hydrogen carbonate
B)  iron(III) carbonate
C)  iron acetate
D)  iron(II) acetate
E)  iron(II) dihydrogen phosphate

Question 13

Which of the following is an acid in aqueous solution?

Accepted Answer

A)  NH3
B)  NaF
C)  Ca(C2H3O2) 2
D)  HI
E)  KCl

Question 14

Determine the name for P4O10.

Accepted Answer

A)  phosphorus(IV) oxide
B)  diphosphorus pentoxide
C)  phosphorus oxide
D)  phosphorus(II) oxide
E)  tetraphosphorus decoxide

Question 15

A typical cup of coffee has about 100.mg of caffeine.Calculate the number of caffeine molecules in 100.mg C8H10N4O2.

Accepted Answer

A)  3.22 × 10-21
B)  3.10 × 1020
C)  1.17 × 1025
D)  3.10 × 1022
E)  3.10 × 1025

Question 16

The compound ClO  is named

Accepted Answer

A)  chlorite.
B)  hypochlorite.
C)  chlorine monoxide.
D)  chlorine (II) oxide.

Question 17

Which of the following is an acid in aqueous solution?

Accepted Answer

A)  CaCO3
B)  HClO2
C)  CH3OCH3
D)  NaCl
E)  KNO3

Question 18

How many atoms of carbon are contained in 47.6 g of Al2(CO3) 3? The molar mass of Al2(CO3) 3 is 233.99 g mol-1.

Accepted Answer

A)  1.23 × 1023 C atoms
B)  2.96 × 1024 C atoms
C)  2.87 × 1025 C atoms
D)  1.10 × 1024 C atoms
E)  3.68 × 1023 C atoms

Question 19

Which of the following is a possible molecular formula for a compound with an empirical formula C4H4O?

Accepted Answer

A)  C8H8O2
B)  C12H12O2
C)  C2H2O
D)  C8H8O A

Question 20

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-1.

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) 2

Exam 3: Molecules,compounds,and Nomenclature

Which one of the following compounds contains ionic bonds?

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How many moles of C3H8 contain 4.95 × 1024 hydrogen atoms?

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Which of the following is an atomic element?

Correct AnswerverifiedE

What is the chemical formula for calcium hydroxide?

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Identify a hydrocarbon.

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When forming ionic compounds,cations and anions form three-dimensional networks known as

Correct AnswerverifiedShow Answer

Which of the following is a molecular compound?

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Identify the perchlorate ion.

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

Correct AnswerverifiedA

Determine the molecular formula of a compound that has a molar mass of 92.0 g mol-1 and an empirical formula of NO2.

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Identify a carboxylic acid.

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Identify the name for the compound Fe(C2H3O2) 2.

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Which of the following is an acid in aqueous solution?

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Determine the name for P4O10.

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A typical cup of coffee has about 100.mg of caffeine.Calculate the number of caffeine molecules in 100.mg C8H10N4O2.

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The compound ClO is named

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Which of the following is an acid in aqueous solution?

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How many atoms of carbon are contained in 47.6 g of Al2(CO3) 3? The molar mass of Al2(CO3) 3 is 233.99 g mol-1.

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Which of the following is a possible molecular formula for a compound with an empirical formula C4H4O?

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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-1.

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How many moles of C₃H₈ contain 4.95 × 10²⁴ hydrogen atoms?

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E

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A

Determine the molecular formula of a compound that has a molar mass of 92.0 g mol^-1 and an empirical formula of NO₂.

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Identify the name for the compound Fe(C₂H₃O₂) ₂.

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Determine the name for P₄O₁₀.

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A typical cup of coffee has about 100.mg of caffeine.Calculate the number of caffeine molecules in 100.mg C₈H₁₀N₄O₂.

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How many atoms of carbon are contained in 47.6 g of Al₂(CO₃) ₃? The molar mass of Al₂(CO₃) ₃is 233.99 g mol^-1.

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Which of the following is a possible molecular formula for a compound with an empirical formula C₄H₄O?

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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^-1.

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