Stoich Review

____________ is the determination of how much "stuff" (product you can make in a reaction from some given amount of reactant

• Stoichiometry

• Dimensional Analysis

• Percent Composition

• Percent Yield

In a chemical reaction, the mass of the products _________________

• is equal to the mass of the reactants.

• is less than the mass of the reactants.

• is greater than the mass of the reactants

• has no relationship to the mass of the reactants.

In the reaction 2CO + O2 --> 2CO2, what is the ratio of moles of 02 used to moles of CO2 produced?

• 1:2

• 2:1

• 2:2

• 1:1

How many moles of Al are needed to react completely with 1.2 mol of FeO?

2Al + 3FeO --> 3Fe + Al2O3

• 0.80 mol

• 1.2 mol

• 1.6 mol

• 2.4 mol

Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed if 0.299 mole of Fe2O3 are made?

4Fe + 3O2 --> 2Fe2O3

• 47.7. g

• 0.00187 g

• 1.196g

• 0.598 g

How many moles of H3PO4 are produced from a reaction of 3 moles of H2O reacting with an excess of P4O10?

P4O10 + 6H2O --> 4H3PO4

• 2 moles

• 12 moles

• 1 mole

• 6.02 x 1023 molecules

How many molecules are in one mole of Calcium?

• 6.02 x 1023 molecules

• 1 molecule

• 40 molecules

• 80 molecules

How many grams are needed to produce 0.425 mole Cu?

2Cr + 3CuSO4 --> Cr2(SO4)3 + 3Cu

• 27.0 g

• 0.0067 g

• 149 g

• 81.5 g

What is the molar mass of hydrogen gas (H2)?

• 2 g/mol

• 1 g/mol

• 6.02 x 1023 g/mol

• 1 mol

What is the empirical formula of glucose C6H12O6?

• CH2O

• CO

• CHO

• C2H8O