Stoichiometry review CP

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?   P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

• 6:4
• 4:6
• 1:3
• 3:1

What is the mole ratio of O₂ to CO₂ in the complete combustion of ethane (C₂H₆)?   2 C₂H₆ + 7 O₂ --> 4 CO₂ + 6 H₂O

• 7:4

• 4:7

• 1:2

• 2:1

Find the molar mass FOR H₂S

• 33.07

• 34.08 g/mol

• 66.04 g/mol

• 65.03 g/mol

What is the molar mass of Al(OH)₃

• 43.98 g/mol

• 47 g/mol

• 138.95 g/mol

• 78 g/mole

In the following chemical reaction, how much NH₃ can be made?

• 0.350 moles

• 0.700 moles

• 1.05 moles

• 0.175 moles

In the following chemical reaction, how much H₂ gas is required?

• 0.350 moles

• 0.700 moles

• 1.05 moles

• 0.175 moles

How much O₂ is made in the following chemical reaction?

• 35.1 g

• 65.6 g

• 70.2 g

• 131 g

How much KCl is made in the following chemical reaction?

• 50.1 g

• 54.5 g

• 102 g

• 107 g

 To make a sandwich you need:

2 slices of bread + 1 lunchmeat --> 1 sandwich

How many sandwiches can be made with

8 slices of bread and 8 slices of meat?

• 4 sandwiches

  with 4 slices of meat left over

• 2 sandwiches with bread and lunchmeat left over

• 6 sandwiches with nothing left over

Q + Z --> D

Q is the excess reactant. What is the limiting reactant?

• Q

• Z

• D