In reacting aluminum carbonate with hydrochloric acid according to the equation Al2(CO3)3 + 6 HCl $\rightarrow$ 2 AlCl3 + 3 H2O + 3 CO2,57.6 mg of carbon dioxide was formed.What mass of aluminum carbonate reacted to form this amount of carbon dioxide?

A) 10.8 mg B) 32.5 mg C) 102 mg D) 306 mg E) 919 mg A) 10.8 mg B) 32.5 mg C) 102 mg D) 306 mg E) 919 mg

The metabolism of glucose can be represented by the equation C6H12O6(s)+ 6 O2(g)$\rightarrow$6 CO2(g)+ 6 H2O(g)$\Delta$H = -2.82 *103 kJ.How many grams of glucose must be metabolized to produce 282 kJ of energy?

A) 18.0 g B) 1.80 * 102 g C) 0.100 g D) 10.0 g E) 67.4 g A) 18.0 g B) 1.80 * 102 g C) 0.100 g D) 10.0 g E) 67.4 g

Ammonium sulfate can be made by the reaction H2SO4 + 2 NH3 $\rightarrow$(NH4)2SO4.What quantity of ammonium sulfate will result from the reaction of 5.00 kg of ammonia and 20.0 kg of sulfuric acid?

A) 13.5 kg B) 19.4 kg C) 25.0 kg D) 26.9 kg E) 38.8 kg A) 13.5 kg B) 19.4 kg C) 25.0 kg D) 26.9 kg E) 38.8 kg

How much energy is required to produce 1.00 kg of aluminum by the reaction 2 Al2O3(s)+ 3 C(s)+ 1.97 * 103 kJ $\rightarrow$4 Al(s)+ 3 CO2(g)?

A) 5.50 * 10-5 kJ B) 7.52 * 10-2 kJ C) 2.70 *103 kJ D) 7.30 * 104 kJ E) 1.83 * 104 kJ A) 5.50 * 10-5 kJ B) 7.52 * 10-2 kJ C) 2.70 *103 kJ D) 7.30 * 104 kJ E) 1.83 * 104 kJ

How many moles of bromine will react with 0.0500 mole of C2H2 in the reaction C2H4 + Br2 $\rightarrow$C2H4Br2?

A) 0.100 mol B) 0.186 mol C) 0.0250 mol D) 0.0500 mol E) 2.00 mol A) 0.100 mol B) 0.186 mol C) 0.0250 mol D) 0.0500 mol E) 2.00 mol

The thermochemical equation describing the heat change in the decomposition of limestone,CaCO3,is given by CaCO3(s)+ 176 kJ$\rightarrow$ CaO(s)+ CO2(g).What is the heat change that accompanies the decomposition of 25.0 g of limestone?

A) 7.12 kJ B) 25.0 kJ C) 44.0 kJ D) 176 kJ E) 1.42 *10-3 kJ A) 7.12 kJ B) 25.0 kJ C) 44.0 kJ D) 176 kJ E) 1.42 *10-3 kJ

Exam 10: Quantity Relationships in Chemical Reactions

In reacting aluminum carbonate with hydrochloric acid according to the equation Al₂(CO₃)₃ + 6 HCl $\rightarrow$ 2 AlCl₃ + 3 H₂O + 3 CO₂,57.6 mg of carbon dioxide was formed.What mass of aluminum carbonate reacted to form this amount of carbon dioxide?

(Multiple Choice)

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Question 21

Barium chloride was used to precipitate silver chloride from a solution of silver nitrate.What mass of barium chloride had to react if 0.635 g of silver chloride formed?

(Multiple Choice)

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Question 22

The decomposition of potassium chlorate is written as shown below.What energy change occurs when 12.3 g of KClO₃ decompose? 2 KClO₃(s)+ 89.6 kJ $\rightarrow$ 2 KCl(s)+ 3 O₂(g)

(Multiple Choice)

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Question 23

A chemist combines hydrochloric acid with a sodium hydroxide solution,transferring 5.75 kJ of heat.Express this in calories.

(Multiple Choice)

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Question 24

Calculate the mass of Na₂O that can be produced by the reaction of 4.00 g of sodium and 2.00 g of oxygen in the reaction 4 Na + O₂ $\rightarrow$ 2 Na₂O.

(Multiple Choice)

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Question 25

How many moles of water are produced by burning 5.77 moles of C₄H₁₀?

(Multiple Choice)

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Question 26

A typical diet provides about 2000 food Calories per day,or 2000 kilocalories.Calculate the equivalent number of joules.

(Multiple Choice)

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Question 27

The metabolism of glucose can be represented by the equation C₆H₁₂O₆(s)+ 6 O₂(g) $\rightarrow$ 6 CO₂(g)+ 6 H₂O(g) $\Delta$ H = -2.82 *10³ kJ.How many grams of glucose must be metabolized to produce 282 kJ of energy?

(Multiple Choice)

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Question 28

The reaction C₆H₆ + HNO₃ $\rightarrow$ C₆H₅NO₂ + H₂O has a 73.5 percent yield under certain conditions.If 12.75 g of C₆H₆ is used,how much C₆H₅NO₂ will be produced?

(Multiple Choice)

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Question 29

A typical candy bar contains 281 food Calories,which is 281 kcal.How many kilojoules are contained in one such candy bar?

(Multiple Choice)

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Question 30

Consider the conversion diagram given below. At which point(s)in the diagram is a molar mass needed?

(Multiple Choice)

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Question 31

Convert 357 J to kcal.

(Multiple Choice)

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Question 32

Formation of two moles of hydrogen chloride gas from the gases hydrogen and chlorine is a reaction for which $\Delta$ H is -185 kJ.Which of the following statements is correct? (i)The reaction is exothermic. (ii)Enthalpy of the system decreases. (iii)Heat is a "product".

(Multiple Choice)

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Question 33

Ammonium sulfate can be made by the reaction H₂SO₄ + 2 NH₃ $\rightarrow$ (NH₄)₂SO₄.What quantity of ammonium sulfate will result from the reaction of 5.00 kg of ammonia and 20.0 kg of sulfuric acid?

(Multiple Choice)

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Question 34

How much energy is required to produce 1.00 kg of aluminum by the reaction 2 Al₂O₃(s)+ 3 C(s)+ 1.97 * 10³ kJ $\rightarrow$ 4 Al(s)+ 3 CO₂(g)?

(Multiple Choice)

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Question 35

How many moles of bromine will react with 0.0500 mole of C₂H₂ in the reaction C₂H₄ + Br₂ $\rightarrow$ C₂H₄Br₂?

(Multiple Choice)

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Question 36

Consider the hypothetical reaction A + 2 B $\rightarrow$ AB₂.If 2 moles of A and 5 moles of B are placed in a container an allowed to react,how many moles of AB₂ will be formed and how many moles of which reactant will remain unreacted?

(Multiple Choice)

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Question 37

The thermochemical equation describing the heat change in the decomposition of limestone,CaCO₃,is given by CaCO₃(s)+ 176 kJ $\rightarrow$ CaO(s)+ CO₂(g).What is the heat change that accompanies the decomposition of 25.0 g of limestone?

(Multiple Choice)

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Question 38

When 1.00 g of C₆H₁₂O₆(s)is formed during photosynthesis,15.67 kJ of the sun's energy is converted to chemical energy.What is the thermochemical equation for the photosynthesis of glucose?

(Multiple Choice)

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Question 39

In the reaction P₄ + 5 O₂ $\rightarrow$ 2 P₂O₅,in order the convert from moles of any substance to moles of another substance as shown by the block diagram. $In the reaction P4 + 5 O2 \rightarrow 2 P2O5,in order the convert from moles of any substance to moles of another substance as shown by the block diagram. What is the conversion factor needed?$ What is the conversion factor needed?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 40

In reacting aluminum carbonate with hydrochloric acid according to the equation Al₂(CO₃)₃ + 6 HCl $\rightarrow$ 2 AlCl₃ + 3 H₂O + 3 CO₂,57.6 mg of carbon dioxide was formed.What mass of aluminum carbonate reacted to form this amount of carbon dioxide?

Barium chloride was used to precipitate silver chloride from a solution of silver nitrate.What mass of barium chloride had to react if 0.635 g of silver chloride formed?

The decomposition of potassium chlorate is written as shown below.What energy change occurs when 12.3 g of KClO₃ decompose? 2 KClO₃(s)+ 89.6 kJ $\rightarrow$ 2 KCl(s)+ 3 O₂(g)

A chemist combines hydrochloric acid with a sodium hydroxide solution,transferring 5.75 kJ of heat.Express this in calories.

Calculate the mass of Na₂O that can be produced by the reaction of 4.00 g of sodium and 2.00 g of oxygen in the reaction 4 Na + O₂ $\rightarrow$ 2 Na₂O.

How many moles of water are produced by burning 5.77 moles of C₄H₁₀?

A typical diet provides about 2000 food Calories per day,or 2000 kilocalories.Calculate the equivalent number of joules.

The metabolism of glucose can be represented by the equation C₆H₁₂O₆(s)+ 6 O₂(g) $\rightarrow$ 6 CO₂(g)+ 6 H₂O(g) $\Delta$ H = -2.82 *10³ kJ.How many grams of glucose must be metabolized to produce 282 kJ of energy?

The reaction C₆H₆ + HNO₃ $\rightarrow$ C₆H₅NO₂ + H₂O has a 73.5 percent yield under certain conditions.If 12.75 g of C₆H₆ is used,how much C₆H₅NO₂ will be produced?

A typical candy bar contains 281 food Calories,which is 281 kcal.How many kilojoules are contained in one such candy bar?

Consider the conversion diagram given below. At which point(s)in the diagram is a molar mass needed?

Convert 357 J to kcal.

Formation of two moles of hydrogen chloride gas from the gases hydrogen and chlorine is a reaction for which $\Delta$ H is -185 kJ.Which of the following statements is correct? (i)The reaction is exothermic. (ii)Enthalpy of the system decreases. (iii)Heat is a "product".

Ammonium sulfate can be made by the reaction H₂SO₄ + 2 NH₃ $\rightarrow$ (NH₄)₂SO₄.What quantity of ammonium sulfate will result from the reaction of 5.00 kg of ammonia and 20.0 kg of sulfuric acid?

How much energy is required to produce 1.00 kg of aluminum by the reaction 2 Al₂O₃(s)+ 3 C(s)+ 1.97 * 10³ kJ $\rightarrow$ 4 Al(s)+ 3 CO₂(g)?

How many moles of bromine will react with 0.0500 mole of C₂H₂ in the reaction C₂H₄ + Br₂ $\rightarrow$ C₂H₄Br₂?

Consider the hypothetical reaction A + 2 B $\rightarrow$ AB₂.If 2 moles of A and 5 moles of B are placed in a container an allowed to react,how many moles of AB₂ will be formed and how many moles of which reactant will remain unreacted?

The thermochemical equation describing the heat change in the decomposition of limestone,CaCO₃,is given by CaCO₃(s)+ 176 kJ $\rightarrow$ CaO(s)+ CO₂(g).What is the heat change that accompanies the decomposition of 25.0 g of limestone?

When 1.00 g of C₆H₁₂O₆(s)is formed during photosynthesis,15.67 kJ of the sun's energy is converted to chemical energy.What is the thermochemical equation for the photosynthesis of glucose?

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Exam 10: Quantity Relationships in Chemical Reactions

In reacting aluminum carbonate with hydrochloric acid according to the equation Al2(CO3)3 + 6 HCl →\rightarrow→ 2 AlCl3 + 3 H2O + 3 CO2,57.6 mg of carbon dioxide was formed.What mass of aluminum carbonate reacted to form this amount of carbon dioxide?

Barium chloride was used to precipitate silver chloride from a solution of silver nitrate.What mass of barium chloride had to react if 0.635 g of silver chloride formed?

The decomposition of potassium chlorate is written as shown below.What energy change occurs when 12.3 g of KClO3 decompose? 2 KClO3(s)+ 89.6 kJ →\rightarrow→ 2 KCl(s)+ 3 O2(g)

A chemist combines hydrochloric acid with a sodium hydroxide solution,transferring 5.75 kJ of heat.Express this in calories.

Calculate the mass of Na2O that can be produced by the reaction of 4.00 g of sodium and 2.00 g of oxygen in the reaction 4 Na + O2 →\rightarrow→ 2 Na2O.

How many moles of water are produced by burning 5.77 moles of C4H10?

A typical diet provides about 2000 food Calories per day,or 2000 kilocalories.Calculate the equivalent number of joules.

The metabolism of glucose can be represented by the equation C6H12O6(s)+ 6 O2(g) →\rightarrow→ 6 CO2(g)+ 6 H2O(g) Δ\DeltaΔ H = -2.82 *103 kJ.How many grams of glucose must be metabolized to produce 282 kJ of energy?

The reaction C6H6 + HNO3 →\rightarrow→ C6H5NO2 + H2O has a 73.5 percent yield under certain conditions.If 12.75 g of C6H6 is used,how much C6H5NO2 will be produced?

A typical candy bar contains 281 food Calories,which is 281 kcal.How many kilojoules are contained in one such candy bar?

Consider the conversion diagram given below. At which point(s)in the diagram is a molar mass needed?

Convert 357 J to kcal.

Formation of two moles of hydrogen chloride gas from the gases hydrogen and chlorine is a reaction for which Δ\DeltaΔ H is -185 kJ.Which of the following statements is correct? (i)The reaction is exothermic. (ii)Enthalpy of the system decreases. (iii)Heat is a "product".

Ammonium sulfate can be made by the reaction H2SO4 + 2 NH3 →\rightarrow→ (NH4)2SO4.What quantity of ammonium sulfate will result from the reaction of 5.00 kg of ammonia and 20.0 kg of sulfuric acid?

How much energy is required to produce 1.00 kg of aluminum by the reaction 2 Al2O3(s)+ 3 C(s)+ 1.97 * 103 kJ →\rightarrow→ 4 Al(s)+ 3 CO2(g)?

How many moles of bromine will react with 0.0500 mole of C2H2 in the reaction C2H4 + Br2 →\rightarrow→ C2H4Br2?

Consider the hypothetical reaction A + 2 B →\rightarrow→ AB2.If 2 moles of A and 5 moles of B are placed in a container an allowed to react,how many moles of AB2 will be formed and how many moles of which reactant will remain unreacted?

The thermochemical equation describing the heat change in the decomposition of limestone,CaCO3,is given by CaCO3(s)+ 176 kJ →\rightarrow→ CaO(s)+ CO2(g).What is the heat change that accompanies the decomposition of 25.0 g of limestone?

When 1.00 g of C6H12O6(s)is formed during photosynthesis,15.67 kJ of the sun's energy is converted to chemical energy.What is the thermochemical equation for the photosynthesis of glucose?

In the reaction P4 + 5 O2 →\rightarrow→ 2 P2O5,in order the convert from moles of any substance to moles of another substance as shown by the block diagram. What is the conversion factor needed?

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

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In reacting aluminum carbonate with hydrochloric acid according to the equation Al₂(CO₃)₃ + 6 HCl $\rightarrow$ 2 AlCl₃ + 3 H₂O + 3 CO₂,57.6 mg of carbon dioxide was formed.What mass of aluminum carbonate reacted to form this amount of carbon dioxide?

The decomposition of potassium chlorate is written as shown below.What energy change occurs when 12.3 g of KClO₃ decompose? 2 KClO₃(s)+ 89.6 kJ $\rightarrow$ 2 KCl(s)+ 3 O₂(g)

Calculate the mass of Na₂O that can be produced by the reaction of 4.00 g of sodium and 2.00 g of oxygen in the reaction 4 Na + O₂ $\rightarrow$ 2 Na₂O.

How many moles of water are produced by burning 5.77 moles of C₄H₁₀?

The metabolism of glucose can be represented by the equation C₆H₁₂O₆(s)+ 6 O₂(g) $\rightarrow$ 6 CO₂(g)+ 6 H₂O(g) $\Delta$ H = -2.82 *10³ kJ.How many grams of glucose must be metabolized to produce 282 kJ of energy?

The reaction C₆H₆ + HNO₃ $\rightarrow$ C₆H₅NO₂ + H₂O has a 73.5 percent yield under certain conditions.If 12.75 g of C₆H₆ is used,how much C₆H₅NO₂ will be produced?

Formation of two moles of hydrogen chloride gas from the gases hydrogen and chlorine is a reaction for which $\Delta$ H is -185 kJ.Which of the following statements is correct? (i)The reaction is exothermic. (ii)Enthalpy of the system decreases. (iii)Heat is a "product".

Ammonium sulfate can be made by the reaction H₂SO₄ + 2 NH₃ $\rightarrow$ (NH₄)₂SO₄.What quantity of ammonium sulfate will result from the reaction of 5.00 kg of ammonia and 20.0 kg of sulfuric acid?

How much energy is required to produce 1.00 kg of aluminum by the reaction 2 Al₂O₃(s)+ 3 C(s)+ 1.97 * 10³ kJ $\rightarrow$ 4 Al(s)+ 3 CO₂(g)?

How many moles of bromine will react with 0.0500 mole of C₂H₂ in the reaction C₂H₄ + Br₂ $\rightarrow$ C₂H₄Br₂?

Consider the hypothetical reaction A + 2 B $\rightarrow$ AB₂.If 2 moles of A and 5 moles of B are placed in a container an allowed to react,how many moles of AB₂ will be formed and how many moles of which reactant will remain unreacted?

The thermochemical equation describing the heat change in the decomposition of limestone,CaCO₃,is given by CaCO₃(s)+ 176 kJ $\rightarrow$ CaO(s)+ CO₂(g).What is the heat change that accompanies the decomposition of 25.0 g of limestone?

When 1.00 g of C₆H₁₂O₆(s)is formed during photosynthesis,15.67 kJ of the sun's energy is converted to chemical energy.What is the thermochemical equation for the photosynthesis of glucose?