Introduction of stoichiometry

Consider the reaction below. 2H2O mc030-1.jpg 2H2 + O2 How many moles of hydrogen are produced when 6.28 mol of oxygen form?

12.6 mol

Acid rain can be destructive to both the natural environment and human-made structures. The equation below shows a reaction that occurs that may lead to the formation of acid rain. 3NO2 + H2O mc025-1.jpg 2HNO3 + NO How many moles (precise to the nearest 0.01 mol) of nitric acid are produced from 300.00 mol of nitrogen dioxide?

200.00 mol

Consider the reaction below. 2H2 + O2 mc015-1.jpg 2H2O How many moles of water are produced from 13.35 mol of oxygen?

26.70 mol

The following balanced equation shows the formation of ethane (C2H6). C2H2 + 2H2 mc022-1.jpg C2H6 How many moles of hydrogen are needed to produce 13.78 mol of ethane?

27.56 mol

Review the equation below. 2KClO3 mc012-1.jpg 2KCl + 3O2 How many moles of oxygen are produced when 2 mol of potassium chlorate (KClO3) decompose?

3

The equation below shows hydrogen reacting with oxygen to produce water. 2H2 + O2 mc028-1.jpg 2H2O If 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

32 mol

Consider the reaction below. 2Al2O3 mc031-1.jpg 4Al + 3O2 How many moles of oxygen are produced when 26.5 mol of aluminum oxide are decomposed?

39.8 mol

Consider the balanced equation below. 4NH3 + 3O2 mc004-1.jpg 2N2 + 6H2O What is the mole ratio of NH3 to N2?

4:2

Consider the balanced equation below. 8H2 + S8 mc006-1.jpg 8H2S Based on the mole ratios, what can most likely be predicted?

8 mol of hydrogen will react with 1 mol of sulfur.

The balanced chemical equation for the reaction of hydrogen and oxygen is shown below. 2H2 + O2 mc002-1.jpg 2H2O The number of moles of hydrogen that is needed to produce 0.253 mol of water is

equal to 0.253 mol.