Question 1

Ozone is unstable,decomposing to oxygen,as shown in the balanced equation 2 O₃ → 3 O₂. In this reaction,how many grams of oxygen can be formed from the decomposition of 96 grams of ozone?

Accepted Answer

The answer of Ozone is unstable,decomposing to oxygen,as shown in...

Question 2

Ozone reacts with iodide ion as shown in the balanced equation below. O₃ + 2 I^- + H₂O → O₂ + I₂ + 2 OH^- In this reaction,how many grams of oxygen can be formed from the reaction of 126 grams of ozone?

Accepted Answer

The answer of Ozone reacts with iodide ion as shown...

Question 3

How many moles are in 7.8 g of acetamide,CH₃CONH₂?

Accepted Answer

The answer of How many moles are in 7.8 g...

Question 4

The fundamental SI unit for measuring matter is the ________.

Accepted Answer

The answer of The fundamental SI unit for measuring matter...

Question 5

Tablets of ascorbic acid,or Vitamin C,C₆H₈O₆,are taken as a dietary supplement.If a typical tablet contains 500 mg,how many atoms of carbon (C)are in a tablet?

Accepted Answer

The answer of Tablets of ascorbic acid,or Vitamin C,C₆H₈O₆,are taken...

Question 6

When carbon dioxide dissolves in water,H⁺ is formed,which makes the solution acidic,as shown in the balanced equation below. CO₂ + H₂O → HCO₃^- + H⁺ What is the percent yield if 0.0088 g of CO₂ reacts with 900 g of H₂O to form 0.000108 g of H⁺?

Accepted Answer

The answer of When carbon dioxide dissolves in water,H⁺ is...

Question 7

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

Accepted Answer

The answer of The empirical formula of a compound that...

Question 8

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

Accepted Answer

The answer of Hydrazine,N₂H₄,is used as a rocket fuel.In the...

Question 9

When the reaction C₄H₁₀ + O₂ → CO₂+ H₂O is balanced using the smallest whole number coefficients,the coefficient in front of O₂ is ________.

Accepted Answer

The answer of When the reaction C₄H₁₀ + O₂ →...

Question 10

What is the empirical formula of benzene,C₆H₆?

Accepted Answer

The answer of What is the empirical formula of benzene,C₆H₆?...

Question 11

When the reaction C₃H₈ + O₂ → CO₂ + H₂O is balanced,the total number of oxygen atoms in the balanced equation is ________.

Accepted Answer

The answer of When the reaction C₃H₈ + O₂ →...

Question 12

Analysis of a 1.000-g sample of the oral hypoglycemic agent metformin^tm yielded 0.3720 g of carbon,0.0858 g of hydrogen,and 0.5422 g of nitrogen.Metformin^tm has a molar mass of 129.16 g/mol.What is the molecular formula of Metformin^tm^?

Accepted Answer

The answer of Analysis of a 1.000-g sample of the...

Question 13

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

Accepted Answer

The answer of To the nearest whole number,the molar mass...

Question 14

Oxygen can be produced from the catalytic decomposition of KClO₃ as shown in the balanced equation below. 2 KClO₃ → 2 KCl + 3 O₂ What is the percent yield if 3.20 grams of oxygen are formed from the reaction of 12.3 grams of KClO₃?

Accepted Answer

The answer of Oxygen can be produced from the catalytic...

Question 15

The number of grams in 0.250mol of urea, (NH₂)₂CO,is ________.

Accepted Answer

The answer of The number of grams in 0.250mol of...

Question 16

The balanced equation for the decomposition of water is shown below. 2 H₂O → 2 H₂ + O₂ If 0.72 g of water react completely in this reaction,what is the theoretical yield of H₂?

Accepted Answer

The answer of The balanced equation for the decomposition of...

Question 17

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?

Accepted Answer

The answer of The balanced equation for the gaseous state...

Question 18

If 2.7 g of H₂ react with 2.7 g of F₂ in the reaction shown below,what is the limiting reactant? H₂ + F₂ → 2 HF

Accepted Answer

The answer of If 2.7 g of H₂ react with...

Question 19

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 ________.

Accepted Answer

The answer of The balanced equation for the reaction of...

Quiz 3: Mass Relationships in Chemical Reactions

Ozone is unstable,decomposing to oxygen,as shown in the balanced equation 2 O3 → 3 O2. In this reaction,how many grams of oxygen can be formed from the decomposition of 96 grams of ozone?

Ozone reacts with iodide ion as shown in the balanced equation below. O3 + 2 I- + H2O → O2 + I2 + 2 OH- In this reaction,how many grams of oxygen can be formed from the reaction of 126 grams of ozone?

How many moles are in 7.8 g of acetamide,CH3CONH2?

The fundamental SI unit for measuring matter is the ________.

Tablets of ascorbic acid,or Vitamin C,C6H8O6,are taken as a dietary supplement.If a typical tablet contains 500 mg,how many atoms of carbon (C)are in a tablet?

When carbon dioxide dissolves in water,H+ is formed,which makes the solution acidic,as shown in the balanced equation below. CO2 + H2O → HCO3- + H+ What is the percent yield if 0.0088 g of CO2 reacts with 900 g of H2O to form 0.000108 g of H+?

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

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

When the reaction C4H10 + O2 → CO2 + H2O is balanced using the smallest whole number coefficients,the coefficient in front of O2 is ________.

What is the empirical formula of benzene,C6H6?

When the reaction C3H8 + O2 → CO2 + H2O is balanced,the total number of oxygen atoms in the balanced equation is ________.

Analysis of a 1.000-g sample of the oral hypoglycemic agent metformintm yielded 0.3720 g of carbon,0.0858 g of hydrogen,and 0.5422 g of nitrogen.Metformintm has a molar mass of 129.16 g/mol.What is the molecular formula of Metformintm?

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

Oxygen can be produced from the catalytic decomposition of KClO3 as shown in the balanced equation below. 2 KClO3 → 2 KCl + 3 O2 What is the percent yield if 3.20 grams of oxygen are formed from the reaction of 12.3 grams of KClO3?

The number of grams in 0.250mol of urea, (NH2)2CO,is ________.

The balanced equation for the decomposition of water is shown below. 2 H2O → 2 H2 + O2 If 0.72 g of water react completely in this reaction,what is the theoretical yield of H2?

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?

If 2.7 g of H2 react with 2.7 g of F2 in the reaction shown below,what is the limiting reactant? H2 + F2 → 2 HF

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 ________.