limiting reactant & percent yield

If 15 grams of copper (II) chloride react with 20 grams of sodium nitrate, how many grams sodium chloride can be formed? 

Formula(NOT BALANCED!!!!):

CuCl₂ + NaNO₃ ---> NaCl + Cu(NO₃)₂

• 13.04 g
• 13.75 grams

• 20.07 grams

• 2.04 grams

P₄ + 3O₂ --> P₄O₆ 
Who is the limiting reactant if 12 moles of P₄ react with 15 moles of O₂? (solve for mols of tetraphosphorus hexaoxide)

• P₄
• O₂
• P₄O₆ 

Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.

• 1.16%
• 116%
• 85%
• 76%

What is the measured amount of a product obtained from completing a chemical reaction?

• mole ratio
• theoretical yield
• percentage yield
• actual yield

The limiting reactant......................................

• slows the reaction down
• runs out first

• is the reactant that is left over
• controls the speed of the reaction

Silver nitrate and sodium phosphate are reacted in equal amounts of 200 g each. How many grams of silver phosphate are produced? 
3AgNO₃  + Na₃(PO₄)  --->  Ag₃(PO₄)  + 3NaNO₃

• 164 g
• 64 g
• 146 g
• 164 moles

When does a chemical reaction stop?

• When the lab is finished
• When the excess reactant is used up
• When the limiting reactant is used up
• Chemical reactions never stop

Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form grams of MgCl₂.

 Mg +  2HCl --> MgCl₂  +  H₂   

• Mg
• H₂
• MgCl₂
• HCl

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich.

 If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

• bread
• jelly
• peanut butter
• sandwich

A reaction was predicted to produce 32.4 grams of a compound. When the product was measured, there were only 26.1 grams made. What is the percent yield?

• 80.6%
• 6.3%
• 24.1%
• 58.5%