Stoichiometry Test

2SO2 + O2 -> 2SO3

(a) What type of reaction is this?

(b) Calculate how many moles of SO3 will be produced if 11.2 grams of O2 are reacted.

2 C4H10 + 13 O2 → 8 CO2 + 10 H2O

(a) Identify the above chemical reaction type.

(b) How many moles of water are produced when 43 grams of oxygen gas are reacted

NH3+ 5O2 → 4NO + 6H2O

How many grams of water are produced if 9.5 grams of oxygen gas are reacted.

NH3+ 5O2 → 4NO + 6H2O

Calculate how many grams of nitrogen monoxide are produced if 15.5g of ammonia (NH3) gas are reacted?

2 C4H10 + 13 O2 → 8 CO2 + 10 H2O

Calculate how many grams of CO2 are produced when 100. grams of butane, C4H10, gas are reacted.

4Fe(s)+3O2(g)→2Fe2O3(s)

125 grams of iron is reacted according to this equation. 175 grams of iron (III) oxide is recovered afterwards.

What is the percent yield of Fe2O3 this reaction?

Balance the following: KClO3 -> KCl + O2

If 5.0 g of KClO3 is decomposed, how many grams of O2 are produced?

Balance the following: Zn + HCl -> ZnCl2 + H2

What mass of hydrogen is produced when 2.5 g of zinc react with 2.5 g of hydrogen chloride?

Which of the following is NOT true of stoichiometry situations?

Water is formed when pure hydrogen gas is burned in pure oxygen gas. How much water will be formed if hydrogen gas reacts with 10.00 grams of oxygen gas?

If you are given grams of a reactant and want to calculate grams of a product, put the following steps into the correct sequence

1. Use the molar mass of the product to get grams
2. Use the mole ratio to convert from one substance to the other
3. Write down the grams of the reactant
4. Be sure to have a balanced equation
5. Use the molar mass of the reactant to get moles