1. 123 mL of a 1.00 M solution of NaCl is mixed with 72.5 mL of a 2.71 M solution of AgNO3. What is the mass of AgCl(s) formed in the precipitation reaction?
AgNO3(aq) + NaCl(aq) AgCl(s) + NaNO3(aq)
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2. What volume (mL) of 0.70 M Sodium hydroxide (NaOH) is needed to neutralize 270 mL of 0.40 M Sulfuric acid (H2SO4)?
2 NaOH + H2SO4 Na2SO4 + 2 H2O

3. Hydrogen gas can be produced through the following reaction.
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
a. How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium?

b. What is the mass in grams of H2 gas when 4.0 moles of HCl is added to the reaction?

4. Acetylene gas (C2H2) is produced as a result of the following reaction.
CaC2(s) + 2H2O(l) → C2H2(g) + Ca(OH)2(aq)
a. If 3.20 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?

b. How many grams of Ca(OH)2 would be formed with 3.20 moles of CaC2?

5. Laughing gas (nitrous oxide, N2O) is sometimes used as an anesthetic in dentistry. It is produced when ammonium nitrate is decomposed according to the following reaction.
NH4NO3(s) → N2O(g) + 2H2O(l)
a. How many moles of NH4NO3 are required to produce 33.0g of N2O?

b. How many moles of water are produced with 45.0g of N2O?

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