3. Chemical Reactions

How many grams of Li3N can be formed from 1.75 moles of Li, assuming an excess of nitrogen? The balanced equation is: 6 Li(s) + N2(g) → 2 Li3N(s).

How many grams of NaOH (molar mass = 40.0 g/mol) are there in 500 mL of a 0.175 M NaOH solution?

How many grams of calcium hydride (CaH2) are required to produce 4.56 L of hydrogen gas (H2) at 25.0 °C and 0.975 atm according to the reaction: CaH2(s) + 2H2O(l) → Ca(OH)2(aq) + 2H2(g)?

How many grams of chlorine gas (Cl2) can be produced from the decomposition of 73.4 g of AuCl3 according to the reaction: 2AuCl3 → 2Au + 3Cl2?

How many grams of hydrogen gas are required if the goal is to form 5.0 x 10⁵ molecules of ammonia? Assume the nitrogen gas is in excess. N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)

How many grams of water are produced when 0.23 moles of O2 react with excess H2 according to the balanced equation: 2H2 + O2 → 2H2O?

How many grams of zinc metal are required to produce 3.5 liters of hydrogen gas at STP according to the chemical equation Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g)?

How many liters of dry chlorine gas can be obtained at 40.0°C and 787 mm Hg from the reaction of an aqueous solution containing 9.41 g of HCl with 2.01 g of KMnO4(s) according to the following equation? 2 KMnO4(s) + 16 HCl(aq) → 8 H2O(l) + 2 MnCl2(aq) + 5 Cl2(g)

How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 0.172 g of Fe2S3 if the percent yield for the reaction is 65.0%?

How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 1.38 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq) + 2 FeCl3(aq) → Fe2S3(s) + 6 NaCl(aq)

How many milliliters of 1.50 M H₂SO₄ are needed to neutralize 75.0 g of NaOH?

How many molecules of H2S are required to form 79.0 g of sulfur according to the reaction: 2 H2S(g) + SO2(g) → 3 S(s) + 2 H2O(l)? Assume excess SO2.

How many moles of H₂ can be formed if a 2.83 g sample of Mg reacts with excess HCl according to the reaction: Mg + 2HCl → MgCl₂ + H₂?

How many moles of H₂ can be formed if a 2.97 g sample of Mg reacts with excess HCl according to the reaction: Mg + 2HCl → MgCl₂ + H₂?

How many moles of carbon are needed to react with 525 g of hematite (Fe2O3) in the following reaction: Fe2O3 + 3C → 2Fe + 3CO?