The thermite reaction produces iron metal and aluminum oxide from a mixture of powdered aluminum metal and iron(III) oxide. FEzO3(s) + 2 Al(s) → 2Fe(l) + Al2O3 A mixture of 50.0 g each of Fe2O3,and Al is used. Which is the limiting reactant? What mass of iron metal can be produced?

A mixture of barium chloride and sulfuric acid yield the precipitate barium sulfate and hydrochloric acid according to the double replacement reaction: H,SO, (aq) + BaCl, (aq) → Baso4 (s) + 2 HCI (aq) A large quantity of barium chloride is used to ensure that the sulfuric acid is the limiting reactant. If 39.5 grams of barium sulfate are produced, what mass of H2SO4 must be dissolved in the initial aqueous solution? g [Number in standard notation; round your answer to one decimal place] The following molar masses may or may not be needed, but are provided to save you time: • barium sulfate = 233 g/mol • sulfuric acid = 98.0 g/mol

For the following reaction, 0.370 grams of hydrogen gas are allowed to react with 52.0 grams of iodine. hydrogen (g) + iodine (s) →→→→→→ hydrogen iodide (g) What is the maximum amount of hydrogen iodide that can be formed? What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete? grams grams

Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese (IV) oxide. 4 HCl(aq) + MnO₂ (s) → MnCl₂ (aq) + 2 H₂O(l) + Cl₂ (g) A sample of 42.5 g MnO₂ is added to a solution containing 50.9 g HCl. What is the limiting reactant? O MnO₂ HC1 What is the theoretical yield of Cl₂? theoretical yield: If the yield of the reaction is 84.1%, what is the actual yield of chlorine? actual yield: g Cl₂ g Cl₂