How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 2.75 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq)+ 2 FeCl3(aq)→ Fe2S3(s)+ 6 NaCl(aq)

A) 50.9 mL B) 86.0 mL C) 102 mL D) 203 mL A) 50.9 mL B) 86.0 mL C) 102 mL D) 203 mL

When 200.mL of ç M hydrochloric acid is added to 125 mL of 1.75 × 10-4 M Mg(OH)2,the resulting solution will be

A) acidic. B) basic. C) neutral. D) It is impossible to tell from the information given. A) acidic. B) basic. C) neutral. D) It is impossible to tell from the information given.

What mass of sulfur hexafluoride,SF6,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF2?

A) 0)901 g B) 8)33 g C) 22.5 g D) 203 g A) 0)901 g B) 8)33 g C) 22.5 g D) 203 g

What mass of dinitrogen monoxide,N2O,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl3F?

A) 0)106 g B) 0)961 g C) 1)04 g D) 9)37 g A) 0)106 g B) 0)961 g C) 1)04 g D) 9)37 g

How many grams of CaCl2 are formed when 35.00 mL of 0.00237 M Ca(OH)2 reacts with excess Cl2 gas? 2 Ca(OH)2(aq)+ 2 Cl2(g)→ Ca(OCl)2(aq)+ CaCl2(s)+ 2 H2O(l)

A) 0)00460 g B) 0)00921 g C) 0)0184 g D) 0)0217 g A) 0)00460 g B) 0)00921 g C) 0)0184 g D) 0)0217 g

A FeCl3 solution is 0.175 M.How many mL of a 0.175 M FeCl3 solution are needed to make 450)mL of a solution that is 0.300 M in Cl- ion?

A) 0)771 mL B) 257 mL C) 771 mL D) It is not possible to make a more concentrated solution from a less concentrated solution. A) 0)771 mL B) 257 mL C) 771 mL D) It is not possible to make a more concentrated solution from a less concentrated solution.

What is the concentration of an AlCl3 solution if 150.mL of the solution contains 250.mg of Cl- ion?

A) 1)57 × 10-2 M B) 3)75 × 10-2 M C) 4)70 × 10-2 M D) 1)41 × 10-1 M A) 1)57 × 10-2 M B) 3)75 × 10-2 M C) 4)70 × 10-2 M D) 1)41 × 10-1 M

Exam 3: Formulas, equations, and Moles

How many milliliters of 0.200 M FeCl₃ are needed to react with an excess of Na₂S to produce 2.75 g of Fe₂S₃ if the percent yield for the reaction is 65.0%? 3 Na₂S(aq)+ 2 FeCl₃(aq)→ Fe₂S₃(s)+ 6 NaCl(aq)

(Multiple Choice)

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Question 121

To the nearest whole number,the molar mass of Cu(NO₃)₂ is ________ g/mol.

(Short Answer)

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Question 122

Hydrazine,N₂H₄,is used as a rocket fuel.In the reaction below,if 80.1 g of N₂H₄ and 92.0 g of N₂O₄ are allowed to react,which is the limiting reactant,and how many grams of excess reactant remain at the end of the reaction? 2 N₂H₄ + N₂O₄ → 3 N₂ + 4 H₂O

(Essay)

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Question 123

What is the mass of 0.500 mol of dichlorodifluoromethane,CF₂Cl₂?

(Multiple Choice)

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Question 124

When 200.mL of çM hydrochloric acid is added to 125 mL of 1.75 × 10^-4 M Mg(OH)₂,the resulting solution will be

(Multiple Choice)

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Question 125

What mass of sulfur hexafluoride,SF₆,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF₂?

(Multiple Choice)

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Question 126

What mass of dinitrogen monoxide,N₂O,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl₃F?

(Multiple Choice)

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Question 127

How many chloride ions are in 1.50 mol of aluminum chloride?

(Multiple Choice)

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Question 128

How many grams of CaCl₂ are formed when 35.00 mL of 0.00237 M Ca(OH)₂ reacts with excess Cl₂ gas? 2 Ca(OH)₂(aq)+ 2 Cl₂(g)→ Ca(OCl)₂(aq)+ CaCl₂(s)+ 2 H₂O(l)

(Multiple Choice)

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Question 129

A FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make 450)mL of a solution that is 0.300 M in Cl^- ion?

(Multiple Choice)

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Question 130

Which of the following has the greatest mass?

(Multiple Choice)

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Question 131

What is the mass of a single chlorine molecule,Cl₂?

(Multiple Choice)

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Question 132

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest whole-number coefficients ___ C₃H₈O(l)+ _ O₂(g)→ _ CO₂(g)+ ___ H₂O(l)

(Multiple Choice)

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Question 133

When silver nitrate reacts with barium chloride,silver chloride and barium nitrate are formed.How many grams of silver chloride are formed when 10.0 g of silver nitrate reacts with 15.0 g of barium chloride?

(Multiple Choice)

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Question 134

A hydrocarbon of unknown formula C_xH_ywas submitted to combustion analysis with the following results.What is the empirical formula of the hydrocarbon?

(Multiple Choice)

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Question 135

What is the concentration of an AlCl₃ solution if 150.mL of the solution contains 250.mg of Cl^- ion?

(Multiple Choice)

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Question 136

What mass of carbon dioxide,C O₂,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl₃F?

(Multiple Choice)

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Question 137

The following diagram represents the reaction of A₂ (unshaded spheres)with B (shaded spheres).What is the balanced chemical equation for this reaction,and what is the limiting reactant?

(Multiple Choice)

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Question 138

Which of the following statements is false concerning the formula of a compound?

(Multiple Choice)

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Question 139

The empirical formula of a compound that contains 82.66% carbon and 17.34% hydrogen is ________.

(Short Answer)

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Question 140

Showing 121 - 140 of 208

Exam 3: Formulas, equations, and Moles

How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 2.75 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq)+ 2 FeCl3(aq)→ Fe2S3(s)+ 6 NaCl(aq)

To the nearest whole number,the molar mass of Cu(NO3)2 is ________ g/mol.

Hydrazine,N2H4,is used as a rocket fuel.In the reaction below,if 80.1 g of N2H4 and 92.0 g of N2O4 are allowed to react,which is the limiting reactant,and how many grams of excess reactant remain at the end of the reaction? 2 N2H4 + N2O4 → 3 N2 + 4 H2O

What is the mass of 0.500 mol of dichlorodifluoromethane,CF2Cl2?

When 200.mL of ç M hydrochloric acid is added to 125 mL of 1.75 × 10-4 M Mg(OH)2,the resulting solution will be

What mass of sulfur hexafluoride,SF6,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF2?

What mass of dinitrogen monoxide,N2O,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl3F?

How many chloride ions are in 1.50 mol of aluminum chloride?

How many grams of CaCl2 are formed when 35.00 mL of 0.00237 M Ca(OH)2 reacts with excess Cl2 gas? 2 Ca(OH)2(aq)+ 2 Cl2(g)→ Ca(OCl)2(aq)+ CaCl2(s)+ 2 H2O(l)

A FeCl3 solution is 0.175 M.How many mL of a 0.175 M FeCl3 solution are needed to make 450)mL of a solution that is 0.300 M in Cl- ion?

Which of the following has the greatest mass?

What is the mass of a single chlorine molecule,Cl2?

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest whole-number coefficients _____ C3H8O(l)+ _____ O2(g)→ _____ CO2(g)+ _____ H2O(l)

When silver nitrate reacts with barium chloride,silver chloride and barium nitrate are formed.How many grams of silver chloride are formed when 10.0 g of silver nitrate reacts with 15.0 g of barium chloride?

A hydrocarbon of unknown formula CxHy was submitted to combustion analysis with the following results.What is the empirical formula of the hydrocarbon?

What is the concentration of an AlCl3 solution if 150.mL of the solution contains 250.mg of Cl- ion?

What mass of carbon dioxide,C O2,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl3F?

The following diagram represents the reaction of A2 (unshaded spheres)with B (shaded spheres).What is the balanced chemical equation for this reaction,and what is the limiting reactant?

Which of the following statements is false concerning the formula of a compound?

The empirical formula of a compound that contains 82.66% carbon and 17.34% hydrogen is ________.

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How many milliliters of 0.200 M FeCl₃ are needed to react with an excess of Na₂S to produce 2.75 g of Fe₂S₃ if the percent yield for the reaction is 65.0%? 3 Na₂S(aq)+ 2 FeCl₃(aq)→ Fe₂S₃(s)+ 6 NaCl(aq)

To the nearest whole number,the molar mass of Cu(NO₃)₂ is ________ g/mol.

Hydrazine,N₂H₄,is used as a rocket fuel.In the reaction below,if 80.1 g of N₂H₄ and 92.0 g of N₂O₄ are allowed to react,which is the limiting reactant,and how many grams of excess reactant remain at the end of the reaction? 2 N₂H₄ + N₂O₄ → 3 N₂ + 4 H₂O

What is the mass of 0.500 mol of dichlorodifluoromethane,CF₂Cl₂?

When 200.mL of çM hydrochloric acid is added to 125 mL of 1.75 × 10^-4 M Mg(OH)₂,the resulting solution will be

What mass of sulfur hexafluoride,SF₆,has the same number of fluorine atoms as 25.0 g of oxygen difluoride,OF₂?

What mass of dinitrogen monoxide,N₂O,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl₃F?

How many grams of CaCl₂ are formed when 35.00 mL of 0.00237 M Ca(OH)₂ reacts with excess Cl₂ gas? 2 Ca(OH)₂(aq)+ 2 Cl₂(g)→ Ca(OCl)₂(aq)+ CaCl₂(s)+ 2 H₂O(l)

A FeCl₃ solution is 0.175 M.How many mL of a 0.175 M FeCl₃solution are needed to make 450)mL of a solution that is 0.300 M in Cl^- ion?

What is the mass of a single chlorine molecule,Cl₂?

What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest whole-number coefficients ___ C₃H₈O(l)+ _ O₂(g)→ _ CO₂(g)+ ___ H₂O(l)

A hydrocarbon of unknown formula C_xH_ywas submitted to combustion analysis with the following results.What is the empirical formula of the hydrocarbon?

What is the concentration of an AlCl₃ solution if 150.mL of the solution contains 250.mg of Cl^- ion?

What mass of carbon dioxide,C O₂,contains the same number of molecules as 3.00 g of trichlorofluoromethane,CCl₃F?

The following diagram represents the reaction of A₂ (unshaded spheres)with B (shaded spheres).What is the balanced chemical equation for this reaction,and what is the limiting reactant?