Tuesday, January 19th
• Right now: bring me any homework you have
that needs to be checked off – this is your ONLY
chance today to get your homework checked!
• Take out your review guide
• Today’s agenda
• Questions on review guide?
• Stoichiometry practice problems
Question 1
• Ammonium chloride and barium hydroxide react in a
double replacement reaction.
• Write a balanced chemical equation
Question 2
• Ammonium chloride and barium hydroxide react in a
double replacement reaction.
• If 3 moles of ammonium chloride reacts with excess
barium hydroxide, how many moles of barium chloride
are formed?
Question 3
• Ammonium chloride and barium hydroxide react in a
double replacement reaction.
• If 4.5 grams of ammonium hydroxide are formed, how
many moles of barium hydroxide were used?
Question 4
• Ammonium chloride and barium hydroxide react in a
double replacement reaction.
• If 6.82 grams of barium hydroxide are used up, how
many grams of ammonium chloride are used up?
Question 5
• Hexane (C6H14) combusts.
• Write and balance the chemical equation.
Question 6
• Hexane (C6H14) combusts.
• 5.1 moles of hexane react with 8.3 moles of oxygen.
What is the limiting reactant?
Question 7
• Lithium and nitrogen react in a synthesis reaction.
• Write and balance the chemical equation.
Question 8
• Lithium and nitrogen react in a synthesis reaction.
• Chemists use 3.5 x 1023 atoms of Li and 3.8 grams of N2 .
How many grams of Li3N can be made? What is the
limiting reactant?
Question 9
• Lithium and nitrogen react in a synthesis reaction.
• Chemists use 6.2 grams of Li and 8.4 grams of N2. What
is the limiting reactant? How many grams of Li3N can be
made?
Question 10
• Copper and silver (I) nitrate react in a single
replacement reaction (Cu2+ is part of the products).
• Write and balance the chemical equation.
Question 11
• Copper and silver (I) nitrate react in a single
replacement reaction (Cu2+ is part of the products).
• Tina Test Tube has 25 grams of Copper and Freddie
Flask has 88 grams of silver (I) nitrate. They perform
the chemical reaction!
• Identify the limiting reactant and predict how many
atoms of silver will be produced.
Question 12
• Copper and silver (I) nitrate react in a single
replacement reaction (Cu2+ is part of the products).
• 6.3 grams of copper react with 35.2 grams of silver
nitrate.
• How many grams of silver should be formed?
Question 13
• Copper and silver (I) nitrate react in a single
replacement reaction (Cu2+ is part of the products).
• 6.3 grams of copper react with 35.2 grams of silver
nitrate.
• In the lab, 19.5 grams of silver is recovered. Calculate
the percent error.