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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
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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?
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b. What is the mass in grams of H2 gas when 4.0 moles of HCl is added to the reaction?
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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?
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b. How many grams of Ca(OH)2 would be formed with 3.20 moles of CaC2?
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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?
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b. How many moles of water are produced with 45.0g of N2O?
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