$\Delta$H = +572 kJ for the decomposition of water by the reaction 2 H2O( )$\rightarrow$2 H2(g)+ O2(g).How many grams of water can be decomposed by 5.00 *103 kJ of energy?

A) 157 g B) 315 g C) 0.0629 g D) 2.57* 107 g E) 5.15 * 107 g A) 157 g B) 315 g C) 0.0629 g D) 2.57* 107 g E) 5.15 * 107 g B

If the reaction N2 + 3 H2 $\rightarrow$2 NH3 is carried out using 1.40 g of N2 and 0.400 g of H2,what mass of excess reactant will remain?

A) 0.200 g N2 B) 1.00 g N2 C) 0.100 g H2 D) 0.300 g H2 E) Both reactants will be completely consumed A) 0.200 g N2 B) 1.00 g N2 C) 0.100 g H2 D) 0.300 g H2 E) Both reactants will be completely consumed C

How many moles of C6H12O6 are formed when 0.250 mole of CO2 is consumed in the reaction 6 CO2 + 6 H2O $\rightarrow$C6H12O6 + 6 O2?

A) 1.50 mol B) 1.00 mol C) 0.250 mol D) 0.167 mol E) 0.0417 mol A) 1.50 mol B) 1.00 mol C) 0.250 mol D) 0.167 mol E) 0.0417 mol

In the reaction 2 AgI + HgI2 $\rightarrow$Ag2HgI4,2.00 g of AgI and 3.50 g of HgI2 were used.What is the limiting reactant?

A) AgI B) HgI2 C) Ag2HgI4 D) There is no limiting reactant. A) AgI B) HgI2 C) Ag2HgI4 D) There is no limiting reactant.

PCl5 can be produced by the reaction PCl3 + Cl2 $\rightarrow$PCl5.What mass of PCl3 must be used to produce 127 g of PCl5 if the percent yield is 84.8%?

A) 71.1 g B) 83.8 g C) 98.8 g D) 108 g E) 150 g A) 71.1 g B) 83.8 g C) 98.8 g D) 108 g E) 150 g

In the reaction CaCN2 + 3 H2O $\rightarrow$CaCO3 + 2 NH3,how many kilograms of NH3 will be produced when 25.0 kg of CaCN2 react with excess water?

A) 10.6 kg B) 12.9 kg C) 2.66 kg D) 5.31 kg E) 7.56 kg A) 10.6 kg B) 12.9 kg C) 2.66 kg D) 5.31 kg E) 7.56 kg

Cu2HgI4 is prepared according to the equation 2 CuI + HgI2 $\rightarrow$Cu2HgI4.When 2.00 g of each reactant are used,which one is the limiting reactant?

A) Both reactants are limiting B) This reaction has no limiting reactant C) CuI D) HgI2 E) Cu2HgI4 A) Both reactants are limiting B) This reaction has no limiting reactant C) CuI D) HgI2 E) Cu2HgI4

In the complete combustion of C3H8O3,how many moles of carbon dioxide are produced when 23.0 g of C3H8O3 burns?

A) 0.250 mol B) 0.750 mol C) 0.0833 mol D) 3.00 mol E) 33.0 mol A) 0.250 mol B) 0.750 mol C) 0.0833 mol D) 3.00 mol E) 33.0 mol

The reaction 2 Sb + 3 Cl2 $\rightarrow$ 2 SbCl3 has an 88.3% yield.If 4.07 g of SbCl3 is desired,what mass of chlorine should be used?

A) 2.15 g B) 0.957 g C) 1.68 g D) 1.90 g E) 3.00 g A) 2.15 g B) 0.957 g C) 1.68 g D) 1.90 g E) 3.00 g

In the combustion of natural gas according to the equation CH4 + 2 O2 $\rightarrow$ CO2 + 2 H2O,how many grams of water are formed during the combustion of 0.264 mole of CH4?

A) 0.528 g B) 2.00 g C) 2.38 g D) 4.75 g E) 9.50 g A) 0.528 g B) 2.00 g C) 2.38 g D) 4.75 g E) 9.50 g

Exam 10: Quantity Relationships in Chemical Reactions

$\Delta$ H = +572 kJ for the decomposition of water by the reaction 2 H₂O( $\Delta H = +572 kJ for the decomposition of water by the reaction 2 H2O( ) \rightarrow 2 H2(g)+ O2(g).How many grams of water can be decomposed by 5.00 103 kJ of energy?$ ) $\rightarrow$ 2 H₂(g)+ O₂(g).How many grams of water can be decomposed by 5.00 10³ kJ of energy?

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(Multiple Choice)

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Question 1

Correct Answer:

Verified

If the reaction N₂ + 3 H₂ $\rightarrow$ 2 NH₃ is carried out using 1.40 g of N₂ and 0.400 g of H₂,what mass of excess reactant will remain?

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(Multiple Choice)

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Question 2

Correct Answer:

Verified

When C₂H₅Cl(g)is burned in oxygen,chlorine gas is produced in addition to carbon dioxide and water vapor.5145 kJ of heat are released for every four moles of C₂H₅Cl(g)burned.Which of the following correctly represents the thermochemical equation?

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(Multiple Choice)

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Question 3

Correct Answer:

Verified

How many moles of C₆H₁₂O₆ are formed when 0.250 mole of CO₂ is consumed in the reaction 6 CO₂ + 6 H₂O $\rightarrow$ C₆H₁₂O₆ + 6 O₂?

(Multiple Choice)

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Question 4

Silver nitrate and magnesium chloride solutions are mixed.What is the Per expression that allows one to convert moles of silver nitrate to moles of magnesium chloride?

(Multiple Choice)

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Question 5

In the reaction 2 AgI + HgI₂ $\rightarrow$ Ag₂HgI₄,2.00 g of AgI and 3.50 g of HgI₂ were used.What is the limiting reactant?

(Multiple Choice)

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Question 6

PCl₅ can be produced by the reaction PCl₃ + Cl₂ $\rightarrow$ PCl₅.What mass of PCl₃ must be used to produce 127 g of PCl₅ if the percent yield is 84.8%?

(Multiple Choice)

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Question 7

In the reaction CaCN₂ + 3 H₂O $\rightarrow$ CaCO₃ + 2 NH₃,how many kilograms of NH₃ will be produced when 25.0 kg of CaCN₂ react with excess water?

(Multiple Choice)

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Question 8

Which of the following defines the percent yield for a reaction?

(Multiple Choice)

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Question 9

Cu₂HgI₄ is prepared according to the equation 2 CuI + HgI₂ $\rightarrow$ Cu₂HgI₄.When 2.00 g of each reactant are used,which one is the limiting reactant?

(Multiple Choice)

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Question 10

Aqueous HCl is added to an aqueous solution of NaOH at 25 °C and the result is shown in the figure below. Which of the following correctly characterizes this reaction?

(Multiple Choice)

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Question 11

In the complete combustion of C₃H₈O₃,how many moles of carbon dioxide are produced when 23.0 g of C₃H₈O₃ burns?

(Multiple Choice)

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Question 12

When one mole of gaseous hydrogen peroxide,H₂O₂,is made from hydrogen and oxygen gases,the enthalpy change is -136 kJ.Which of the following correctly represents the thermochemical equation? (i)H₂(g)+ O₂(g) $\rightarrow$ H₂O₂(g)+ 136 kJ (ii)H₂(g)+ O₂(g)+ 136 kJ $\rightarrow$ H₂O₂(g) (iii)H₂(g)+ O₂(g) $\rightarrow$ H₂O₂(g)?0?H = -136 kJ (iv)H₂(g)+ O₂(g) $\rightarrow$ H₂O₂(g)?0?H = +136 kJ

(Multiple Choice)

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Question 13

Which of the following best describes a limiting reactant?

(Multiple Choice)

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Question 14

A chemical reaction resulted in 1.376 g of product,which represented a 78.5 percent yield for the reaction.What is the theoretical yield?

(Multiple Choice)

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Question 15

Consider the following thermochemical equation: CaO(s)+ H₂O( $Consider the following thermochemical equation: CaO(s)+ H2O( ) \rightarrow Ca(OH)2(s) \Delta H = -66.5 kJ Which of the following statements is/are correct? (i)The reaction is exothermic (ii)The reaction releases 66.5 kJ per gram of Ca(OH)2(s)formed (iii)Alternatively,the \Delta H term could be added to the product side of the equation$ ) $\rightarrow$ Ca(OH)₂(s) $\Delta$ H = -66.5 kJ Which of the following statements is/are correct? (i)The reaction is exothermic (ii)The reaction releases 66.5 kJ per gram of Ca(OH)₂(s)formed (iii)Alternatively,the $\Delta$ H term could be added to the product side of the equation

(Multiple Choice)

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Question 16

How many moles of oxygen are consumed in the complete combustion of 1.60 moles of benzene,C₆H₆?

(Multiple Choice)

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Question 17

What is the theoretical yield of phosphorus triiodide when 4.50 g of phosphorus is combined with 45.0 g of iodine? The compound is made by the direct combination of the elements.

(Multiple Choice)

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Question 18

The reaction 2 Sb + 3 Cl₂ $\rightarrow$ 2 SbCl₃ has an 88.3% yield.If 4.07 g of SbCl₃ is desired,what mass of chlorine should be used?

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Question 19

In the combustion of natural gas according to the equation CH₄ + 2 O₂ $\rightarrow$ CO₂ + 2 H₂O,how many grams of water are formed during the combustion of 0.264 mole of CH₄?

(Multiple Choice)

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Question 20

Showing 1 - 20 of 40

If the reaction N₂ + 3 H₂ $\rightarrow$ 2 NH₃ is carried out using 1.40 g of N₂ and 0.400 g of H₂,what mass of excess reactant will remain?

When C₂H₅Cl(g)is burned in oxygen,chlorine gas is produced in addition to carbon dioxide and water vapor.5145 kJ of heat are released for every four moles of C₂H₅Cl(g)burned.Which of the following correctly represents the thermochemical equation?

How many moles of C₆H₁₂O₆ are formed when 0.250 mole of CO₂ is consumed in the reaction 6 CO₂ + 6 H₂O $\rightarrow$ C₆H₁₂O₆ + 6 O₂?

Silver nitrate and magnesium chloride solutions are mixed.What is the Per expression that allows one to convert moles of silver nitrate to moles of magnesium chloride?

In the reaction 2 AgI + HgI₂ $\rightarrow$ Ag₂HgI₄,2.00 g of AgI and 3.50 g of HgI₂ were used.What is the limiting reactant?

PCl₅ can be produced by the reaction PCl₃ + Cl₂ $\rightarrow$ PCl₅.What mass of PCl₃ must be used to produce 127 g of PCl₅ if the percent yield is 84.8%?

In the reaction CaCN₂ + 3 H₂O $\rightarrow$ CaCO₃ + 2 NH₃,how many kilograms of NH₃ will be produced when 25.0 kg of CaCN₂ react with excess water?

Which of the following defines the percent yield for a reaction?

Cu₂HgI₄ is prepared according to the equation 2 CuI + HgI₂ $\rightarrow$ Cu₂HgI₄.When 2.00 g of each reactant are used,which one is the limiting reactant?

Aqueous HCl is added to an aqueous solution of NaOH at 25 °C and the result is shown in the figure below. Which of the following correctly characterizes this reaction?

In the complete combustion of C₃H₈O₃,how many moles of carbon dioxide are produced when 23.0 g of C₃H₈O₃ burns?

Which of the following best describes a limiting reactant?

A chemical reaction resulted in 1.376 g of product,which represented a 78.5 percent yield for the reaction.What is the theoretical yield?

How many moles of oxygen are consumed in the complete combustion of 1.60 moles of benzene,C₆H₆?

What is the theoretical yield of phosphorus triiodide when 4.50 g of phosphorus is combined with 45.0 g of iodine? The compound is made by the direct combination of the elements.

The reaction 2 Sb + 3 Cl₂ $\rightarrow$ 2 SbCl₃ has an 88.3% yield.If 4.07 g of SbCl₃ is desired,what mass of chlorine should be used?

In the combustion of natural gas according to the equation CH₄ + 2 O₂ $\rightarrow$ CO₂ + 2 H₂O,how many grams of water are formed during the combustion of 0.264 mole of CH₄?

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Exam 10: Quantity Relationships in Chemical Reactions

Δ\DeltaΔ H = +572 kJ for the decomposition of water by the reaction 2 H2O( ) →\rightarrow→ 2 H2(g)+ O2(g).How many grams of water can be decomposed by 5.00 *103 kJ of energy?

If the reaction N2 + 3 H2 →\rightarrow→ 2 NH3 is carried out using 1.40 g of N2 and 0.400 g of H2,what mass of excess reactant will remain?

When C2H5Cl(g)is burned in oxygen,chlorine gas is produced in addition to carbon dioxide and water vapor.5145 kJ of heat are released for every four moles of C2H5Cl(g)burned.Which of the following correctly represents the thermochemical equation?

How many moles of C6H12O6 are formed when 0.250 mole of CO2 is consumed in the reaction 6 CO2 + 6 H2O →\rightarrow→ C6H12O6 + 6 O2?

Silver nitrate and magnesium chloride solutions are mixed.What is the Per expression that allows one to convert moles of silver nitrate to moles of magnesium chloride?

In the reaction 2 AgI + HgI2 →\rightarrow→ Ag2HgI4,2.00 g of AgI and 3.50 g of HgI2 were used.What is the limiting reactant?

PCl5 can be produced by the reaction PCl3 + Cl2 →\rightarrow→ PCl5.What mass of PCl3 must be used to produce 127 g of PCl5 if the percent yield is 84.8%?

In the reaction CaCN2 + 3 H2O →\rightarrow→ CaCO3 + 2 NH3,how many kilograms of NH3 will be produced when 25.0 kg of CaCN2 react with excess water?

Which of the following defines the percent yield for a reaction?

Cu2HgI4 is prepared according to the equation 2 CuI + HgI2 →\rightarrow→ Cu2HgI4.When 2.00 g of each reactant are used,which one is the limiting reactant?

Aqueous HCl is added to an aqueous solution of NaOH at 25 °C and the result is shown in the figure below. Which of the following correctly characterizes this reaction?

In the complete combustion of C3H8O3,how many moles of carbon dioxide are produced when 23.0 g of C3H8O3 burns?

Which of the following best describes a limiting reactant?

A chemical reaction resulted in 1.376 g of product,which represented a 78.5 percent yield for the reaction.What is the theoretical yield?

How many moles of oxygen are consumed in the complete combustion of 1.60 moles of benzene,C6H6?

What is the theoretical yield of phosphorus triiodide when 4.50 g of phosphorus is combined with 45.0 g of iodine? The compound is made by the direct combination of the elements.

The reaction 2 Sb + 3 Cl2 →\rightarrow→ 2 SbCl3 has an 88.3% yield.If 4.07 g of SbCl3 is desired,what mass of chlorine should be used?

In the combustion of natural gas according to the equation CH4 + 2 O2 →\rightarrow→ CO2 + 2 H2O,how many grams of water are formed during the combustion of 0.264 mole of CH4?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: the Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Atomic Theory: the Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, liquids, and Solids

Solutions

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Oxidation-Reduction Redoxreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

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If the reaction N₂ + 3 H₂ $\rightarrow$ 2 NH₃ is carried out using 1.40 g of N₂ and 0.400 g of H₂,what mass of excess reactant will remain?

When C₂H₅Cl(g)is burned in oxygen,chlorine gas is produced in addition to carbon dioxide and water vapor.5145 kJ of heat are released for every four moles of C₂H₅Cl(g)burned.Which of the following correctly represents the thermochemical equation?

How many moles of C₆H₁₂O₆ are formed when 0.250 mole of CO₂ is consumed in the reaction 6 CO₂ + 6 H₂O $\rightarrow$ C₆H₁₂O₆ + 6 O₂?

In the reaction 2 AgI + HgI₂ $\rightarrow$ Ag₂HgI₄,2.00 g of AgI and 3.50 g of HgI₂ were used.What is the limiting reactant?

PCl₅ can be produced by the reaction PCl₃ + Cl₂ $\rightarrow$ PCl₅.What mass of PCl₃ must be used to produce 127 g of PCl₅ if the percent yield is 84.8%?

In the reaction CaCN₂ + 3 H₂O $\rightarrow$ CaCO₃ + 2 NH₃,how many kilograms of NH₃ will be produced when 25.0 kg of CaCN₂ react with excess water?

Cu₂HgI₄ is prepared according to the equation 2 CuI + HgI₂ $\rightarrow$ Cu₂HgI₄.When 2.00 g of each reactant are used,which one is the limiting reactant?

In the complete combustion of C₃H₈O₃,how many moles of carbon dioxide are produced when 23.0 g of C₃H₈O₃ burns?

How many moles of oxygen are consumed in the complete combustion of 1.60 moles of benzene,C₆H₆?

The reaction 2 Sb + 3 Cl₂ $\rightarrow$ 2 SbCl₃ has an 88.3% yield.If 4.07 g of SbCl₃ is desired,what mass of chlorine should be used?

In the combustion of natural gas according to the equation CH₄ + 2 O₂ $\rightarrow$ CO₂ + 2 H₂O,how many grams of water are formed during the combustion of 0.264 mole of CH₄?