Given the chemical equation: N2 + 3 H2 → 2 NH3.On a molecular level,what do the coefficients mean?

A) 1 atom of nitrogen reacts with 3 atoms of hydrogen to give 2 atoms of ammonia. B) 28 g of nitrogen reacts with 6 grams of hydrogen to give 34 grams of ammonia. C) 1 mole of nitrogen reacts with 3 moles of hydrogen to give 2 moles of ammonia. D) 1 molecule of nitrogen reacts with 3 molecules of hydrogen to give 2 molecules of ammonia. A) 1 atom of nitrogen reacts with 3 atoms of hydrogen to give 2 atoms of ammonia. B) 28 g of nitrogen reacts with 6 grams of hydrogen to give 34 grams of ammonia. C) 1 mole of nitrogen reacts with 3 moles of hydrogen to give 2 moles of ammonia. D) 1 molecule of nitrogen reacts with 3 molecules of hydrogen to give 2 molecules of ammonia.

How many moles are in 1.50 g of ethylamine,CH3CH2NH2?

A) 0.0222 mol B) 0.0332 mol C) 90.16 mol D) 45.08 mol A) 0.0222 mol B) 0.0332 mol C) 90.16 mol D) 45.08 mol

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 2.845 g of CO2 and 1.744 g of H2O.What is the empirical formula of the compound?

A) CH2 B) CH3 C) C4H10 D) C5H2 A) CH2 B) CH3 C) C4H10 D) C5H2

Exam 3: Mass Relationships in Chemical Reactions

Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas.How many grams of nitrogen are formed when 5.54 g of dintrogen monoxide decomposes?

(Multiple Choice)

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Question 41

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 42

What is the empirical formula of benzene,C₆H₆?

(Short Answer)

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Question 43

Which conducts electricity?

(Multiple Choice)

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Question 44

How many moles of H₂O 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 45

The balanced equation for the reaction of acetylene,C₂H₂,and oxygen in an acetylene torch is 2 C₂H₂ + 5 O₂ → 4 CO₂ + 2 H₂O. In this reaction the number of grams of oxygen required to react with 0.13 g of acetylene is ________.

(Short Answer)

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Question 46

In the reaction between glucose and oxygen,10.0 g of glucose reacts and 7.50 L of carbon dioxide is formed.What is the percent yield if the density of CO₂ is 1.26 g/L? C₆H₁₂O₆(s)+ 6 O₂(g)→ 6 CO₂(g)+ 6 H₂O(l)

(Multiple Choice)

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Question 47

Given the chemical equation: N₂ + 3 H₂ → 2 NH₃.On a molecular level,what do the coefficients mean?

(Multiple Choice)

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Question 48

Balance the chemical equation given below,and determine the number of moles of iodine that reacts with 5.0 g of aluminum. Al(s)+ I₂(s)→ Al₂I₆(s)

(Multiple Choice)

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Question 49

How many moles are in 1.50 g of ethylamine,CH₃CH₂NH₂?

(Multiple Choice)

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Question 50

What is the molar mass of nitrogen gas?

(Multiple Choice)

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Question 51

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 52

4.0 g of iron is reacted with 4.0 g of water according to the chemical equation shown below.Which one of the following statements is false? 3 Fe(s)+ 4 H₂O(l)→ Fe₃O₄(s)+ 4 H₂(g)

(Multiple Choice)

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Question 53

Combustion analysis of 2.796 g of an unknown compound containing carbon,hydrogen,and oxygen produced 5.597 g of CO₂ and 2.268 g of H₂O.What is the empirical formula of the compound?

(Multiple Choice)

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Question 54

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 2.845 g of CO₂ and 1.744 g of H₂O.What is the empirical formula of the compound?

(Multiple Choice)

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Question 55

What is the identity of substance X if 0.380 mol of X weighs 17.5 g?

(Multiple Choice)

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Question 56

Which one of the following compounds contains the smallest percent oxygen by mass?

(Multiple Choice)

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Question 57

Chemical equations are balanced in order to obey the law of

(Multiple Choice)

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Question 58

Which one of the following statements about balanced equations is true? A reaction is balanced by

(Multiple Choice)

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Question 59

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 14.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L. NH₃(g)+ O₂(g)→ NO(g)+ H₂O(l)

(Multiple Choice)

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Question 60

Showing 41 - 60 of 159

Exam 3: Mass Relationships in Chemical Reactions

Dinitrogen monoxide gas decomposes to form nitrogen gas and oxygen gas.How many grams of nitrogen are formed when 5.54 g of dintrogen monoxide decomposes?

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?

What is the empirical formula of benzene,C6H6?

Which conducts electricity?

How many moles of H2O 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)

The balanced equation for the reaction of acetylene,C2H2,and oxygen in an acetylene torch is 2 C2H2 + 5 O2 → 4 CO2 + 2 H2O. In this reaction the number of grams of oxygen required to react with 0.13 g of acetylene is ________.

In the reaction between glucose and oxygen,10.0 g of glucose reacts and 7.50 L of carbon dioxide is formed.What is the percent yield if the density of CO2 is 1.26 g/L? C6H12O6(s)+ 6 O2(g)→ 6 CO2(g)+ 6 H2O(l)

Given the chemical equation: N2 + 3 H2 → 2 NH3.On a molecular level,what do the coefficients mean?

Balance the chemical equation given below,and determine the number of moles of iodine that reacts with 5.0 g of aluminum. ________ Al(s)+ ________ I2(s)→ ________ Al2I6(s)

How many moles are in 1.50 g of ethylamine,CH3CH2NH2?

What is the molar mass of nitrogen gas?

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

4.0 g of iron is reacted with 4.0 g of water according to the chemical equation shown below.Which one of the following statements is false? 3 Fe(s)+ 4 H2O(l)→ Fe3O4(s)+ 4 H2(g)

Combustion analysis of 2.796 g of an unknown compound containing carbon,hydrogen,and oxygen produced 5.597 g of CO2 and 2.268 g of H2O.What is the empirical formula of the compound?

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 2.845 g of CO2 and 1.744 g of H2O.What is the empirical formula of the compound?

What is the identity of substance X if 0.380 mol of X weighs 17.5 g?

Which one of the following compounds contains the smallest percent oxygen by mass?

Chemical equations are balanced in order to obey the law of

Which one of the following statements about balanced equations is true? A reaction is balanced by

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 14.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L. ________ NH3(g)+ ________ O2(g)→ ________ NO(g)+ ________ H2O(l)

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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?

What is the empirical formula of benzene,C₆H₆?

How many moles of H₂O 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)

The balanced equation for the reaction of acetylene,C₂H₂,and oxygen in an acetylene torch is 2 C₂H₂ + 5 O₂ → 4 CO₂ + 2 H₂O. In this reaction the number of grams of oxygen required to react with 0.13 g of acetylene is ________.

In the reaction between glucose and oxygen,10.0 g of glucose reacts and 7.50 L of carbon dioxide is formed.What is the percent yield if the density of CO₂ is 1.26 g/L? C₆H₁₂O₆(s)+ 6 O₂(g)→ 6 CO₂(g)+ 6 H₂O(l)

Given the chemical equation: N₂ + 3 H₂ → 2 NH₃.On a molecular level,what do the coefficients mean?

Balance the chemical equation given below,and determine the number of moles of iodine that reacts with 5.0 g of aluminum. Al(s)+ I₂(s)→ Al₂I₆(s)

How many moles are in 1.50 g of ethylamine,CH₃CH₂NH₂?

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

4.0 g of iron is reacted with 4.0 g of water according to the chemical equation shown below.Which one of the following statements is false? 3 Fe(s)+ 4 H₂O(l)→ Fe₃O₄(s)+ 4 H₂(g)

Combustion analysis of 2.796 g of an unknown compound containing carbon,hydrogen,and oxygen produced 5.597 g of CO₂ and 2.268 g of H₂O.What is the empirical formula of the compound?

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 2.845 g of CO₂ and 1.744 g of H₂O.What is the empirical formula of the compound?

Balance the chemical equation given below,and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 14.0 g of oxygen at 25°C? The density of nitrogen monoxide at 25°C is 1.23 g/L. NH₃(g)+ O₂(g)→ NO(g)+ H₂O(l)