Combustion analysis of an unknown compound containing only carbon and hydrogen produced 1.1385 g of CO2 and 0.5805 g of H2O.What is the empirical formula of the compound?

A) CH2 B) C2H5 C) C4H10 D) C5H2 A) CH2 B) C2H5 C) C4H10 D) C5H2

How many grams of the excess reagent are left over when 6.00 g of CS2 gas react with 10.0 g of Cl2 gas in the following reaction? CS2(g)+ 3 Cl2(g)→ CCl4(l)+ S2Cl2(l)

A) 2.42 g B) 2.77 g C) 3.58 g D) 4.00 g A) 2.42 g B) 2.77 g C) 3.58 g D) 4.00 g

How many sulfate ions are there in 5.00 g of FeSO4?

A) 5.46 × 10-26 iron (II)ions B) 1.98 × 1022 iron (II)ions C) 1.83 × 1025 iron (II)ions D) 4.58 × 1026 iron (II)ions A) 5.46 × 10-26 iron (II)ions B) 1.98 × 1022 iron (II)ions C) 1.83 × 1025 iron (II)ions D) 4.58 × 1026 iron (II)ions

1.00 mole of O2 contains the same number of molecules as

A) 0.667 mole of O3. B) 1.00 mole of CH3CO2CH2Cl. C) 2.00 mole of CH3CH2OCH2Br. D) All of these A) 0.667 mole of O3. B) 1.00 mole of CH3CO2CH2Cl. C) 2.00 mole of CH3CH2OCH2Br. D) All of these

1.00 mole of O2 contains the same number of oxygen atoms as

A) 0.667 mole of O3. B) 1.00 mole of CH3CO2H. C) 2.00 mole of CH3CH2OH. D) All of the above A) 0.667 mole of O3. B) 1.00 mole of CH3CO2H. C) 2.00 mole of CH3CH2OH. D) All of the above

The following diagrams represent the reaction of A2 (shaded spheres)with B2 (unshaded spheres).Identify the limiting reactant and write a balanced equation for the reaction.

A) A2 is the limiting reactant;A + 3 B → AB3. B) A2 is the limiting reactant;A2 + 3 B2 → 2 AB3. C) B2 is the limiting reactant;A + 3 B → AB3. D) B2 is the limiting reactant;A2 + 3 B2 → 2 AB3. A) A2 is the limiting reactant;A + 3 B → AB3. B) A2 is the limiting reactant;A2 + 3 B2 → 2 AB3. C) B2 is the limiting reactant;A + 3 B → AB3. D) B2 is the limiting reactant;A2 + 3 B2 → 2 AB3.

Exam 3: Mass Relationships in Chemical Reactions

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When 5.00 × 10²² molecules of ammonia react with 4.00 × 10²² molecules of oxygen according to the chemical equation shown below,how many grams of nitrogen gas are produced? 4 NH₃(g)+ 3 O₂(g)→ 2 N₂(g)+ 6 H₂O(g)

(Multiple Choice)

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Question 21

What is the mass of 0.500 mol of carbon tetrafluoride,CF₄?

(Multiple Choice)

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Question 22

When methane,CH₄,undergoes combustion with oxygen,the usual products are carbon dioxide and water.Carbon monoxide is formed when the limiting reactant is

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Question 23

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 1.1385 g of CO₂ and 0.5805 g of H₂O.What is the empirical formula of the compound?

(Multiple Choice)

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Question 24

What is the molar mass of calcium permanganate?

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Question 25

-2-Propanol has the molecular formula C₃H₈O.Which ball and stick model shown above represents 2-propanol? [gray spheres = C,black spheres = O,unshaded spheres = H]

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Question 26

The balanced equation for the gaseous state oxidation of ammonia is shown below. 4 NH₃ + 5 O₂ → 4 NO + 6 H₂O How many moles of O₂ are required to react with 1.2 mole of NH₃?

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Question 27

How many grams of the excess reagent are left over when 6.00 g of CS₂ gas react with 10.0 g of Cl₂ gas in the following reaction? CS₂(g)+ 3 Cl₂(g)→ CCl₄(l)+ S₂Cl₂(l)

(Multiple Choice)

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Question 28

Each molecule of cortisone contains 21 atoms of carbon (plus other atoms).The mass percentage of carbon in cortisone is 69.98%.What is the molar mass of cortisone?

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Question 29

A balanced equation has the same numbers and kinds of ________ on both sides of the reaction arrow.

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Question 30

The following diagram represents the reaction of A₂ (unshaded spheres)with B (shaded spheres).How many moles of product can be produced from the reaction of 1.0 mol of A₂ and 1.0 mol of B?

(Multiple Choice)

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Question 31

How many moles of BCl₃ are needed to produce 15.0 g of HCl(aq)in the following reaction? BCl₃(g)+ 3 H₂O(l)→ 3 HCl(aq)+ B(OH)₃(aq)

(Multiple Choice)

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Question 32

What is the molar mass of iodine?

(Multiple Choice)

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Question 33

How many sulfate ions are there in 5.00 g of FeSO₄?

(Multiple Choice)

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Question 34

1.00 mole of O₂ contains the same number of molecules as

(Multiple Choice)

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Question 35

How many sodium atoms are in 3.00 g of sodium dichromate,Na₂Cr₂O₇?

(Multiple Choice)

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Question 36

Consider two reactants,A and B.The molar mass of A is greater han the molar mass of B.You add equal masses of A and B together and let them react.Which of the following statements must be true?

(Multiple Choice)

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Question 37

1.00 mole of O₂ contains the same number of oxygen atoms as

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Question 38

Which one of the following is an empirical formula?

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Question 39

The following diagrams represent the reaction of A₂ (shaded spheres)with B₂ (unshaded spheres).Identify the limiting reactant and write a balanced equation for the reaction.

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Question 40

Showing 21 - 40 of 159

Exam 3: Mass Relationships in Chemical Reactions

When 5.00 × 1022 molecules of ammonia react with 4.00 × 1022 molecules of oxygen according to the chemical equation shown below,how many grams of nitrogen gas are produced? 4 NH3(g)+ 3 O2(g)→ 2 N2(g)+ 6 H2O(g)

What is the mass of 0.500 mol of carbon tetrafluoride,CF4?

When methane,CH4,undergoes combustion with oxygen,the usual products are carbon dioxide and water.Carbon monoxide is formed when the limiting reactant is

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 1.1385 g of CO2 and 0.5805 g of H2O.What is the empirical formula of the compound?

What is the molar mass of calcium permanganate?

-2-Propanol has the molecular formula C3H8O.Which ball and stick model shown above represents 2-propanol? [gray spheres = C,black spheres = O,unshaded spheres = H]

The balanced equation for the gaseous state oxidation of ammonia is shown below. 4 NH3 + 5 O2 → 4 NO + 6 H2O How many moles of O2 are required to react with 1.2 mole of NH3?

How many grams of the excess reagent are left over when 6.00 g of CS2 gas react with 10.0 g of Cl2 gas in the following reaction? CS2(g)+ 3 Cl2(g)→ CCl4(l)+ S2Cl2(l)

Each molecule of cortisone contains 21 atoms of carbon (plus other atoms).The mass percentage of carbon in cortisone is 69.98%.What is the molar mass of cortisone?

A balanced equation has the same numbers and kinds of ________ on both sides of the reaction arrow.

The following diagram represents the reaction of A2 (unshaded spheres)with B (shaded spheres).How many moles of product can be produced from the reaction of 1.0 mol of A2 and 1.0 mol of B?

How many moles of BCl3 are needed to produce 15.0 g of HCl(aq)in the following reaction? BCl3(g)+ 3 H2O(l)→ 3 HCl(aq)+ B(OH)3(aq)

What is the molar mass of iodine?

How many sulfate ions are there in 5.00 g of FeSO4?

1.00 mole of O2 contains the same number of molecules as

How many sodium atoms are in 3.00 g of sodium dichromate,Na2Cr2O7?

Consider two reactants,A and B.The molar mass of A is greater han the molar mass of B.You add equal masses of A and B together and let them react.Which of the following statements must be true?

1.00 mole of O2 contains the same number of oxygen atoms as

Which one of the following is an empirical formula?

The following diagrams represent the reaction of A2 (shaded spheres)with B2 (unshaded spheres).Identify the limiting reactant and write a balanced equation for the reaction.

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When 5.00 × 10²² molecules of ammonia react with 4.00 × 10²² molecules of oxygen according to the chemical equation shown below,how many grams of nitrogen gas are produced? 4 NH₃(g)+ 3 O₂(g)→ 2 N₂(g)+ 6 H₂O(g)

What is the mass of 0.500 mol of carbon tetrafluoride,CF₄?

When methane,CH₄,undergoes combustion with oxygen,the usual products are carbon dioxide and water.Carbon monoxide is formed when the limiting reactant is

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 1.1385 g of CO₂ and 0.5805 g of H₂O.What is the empirical formula of the compound?

-2-Propanol has the molecular formula C₃H₈O.Which ball and stick model shown above represents 2-propanol? [gray spheres = C,black spheres = O,unshaded spheres = H]

The balanced equation for the gaseous state oxidation of ammonia is shown below. 4 NH₃ + 5 O₂ → 4 NO + 6 H₂O How many moles of O₂ are required to react with 1.2 mole of NH₃?

How many grams of the excess reagent are left over when 6.00 g of CS₂ gas react with 10.0 g of Cl₂ gas in the following reaction? CS₂(g)+ 3 Cl₂(g)→ CCl₄(l)+ S₂Cl₂(l)

The following diagram represents the reaction of A₂ (unshaded spheres)with B (shaded spheres).How many moles of product can be produced from the reaction of 1.0 mol of A₂ and 1.0 mol of B?

How many moles of BCl₃ are needed to produce 15.0 g of HCl(aq)in the following reaction? BCl₃(g)+ 3 H₂O(l)→ 3 HCl(aq)+ B(OH)₃(aq)

How many sulfate ions are there in 5.00 g of FeSO₄?

1.00 mole of O₂ contains the same number of molecules as

How many sodium atoms are in 3.00 g of sodium dichromate,Na₂Cr₂O₇?

1.00 mole of O₂ contains the same number of oxygen atoms as

The following diagrams represent the reaction of A₂ (shaded spheres)with B₂ (unshaded spheres).Identify the limiting reactant and write a balanced equation for the reaction.