CHEM 120 Unit 3 Quiz (100% Correct Solutions)

Question: Zinc metal will react with aqueous hydrochloric acid to produce aqueous zinc chloride and hydrogen gas. Which of the following is the complete, balanced equation for this reaction? Question : Determine the molar mass of the molecule Boron Tri fluoride. Question: In the figure shown, is a chemical reaction occurring? Question: Balance the following skeletal equation: Li(s) + H2O(l) → LiOH(aq) + H2(g). Question: How many atoms of O are in one molecule of the material Al(NO3)3 For the reaction: Question: 3Cu(NO3)2(aq) + 2Na3PO4(aq) → Cu3(PO4)2(s) + 6NaNO3(aq) Select all the following true statements. There may be multiple correct choices. Question: Aluminum reacts with oxygen according to the following reaction: 4Al(s) + 3O2(g) → 2Al2O3(s) If 12 moles of aluminum react completely with oxygen, how many moles of Al2O3 should form? Question: What is the % concentration of a solution consisting of 60 grams of solute dissolved in solution with a total volume of 500 ml? Question: A solution is prepared by dissolving 8.5 grams of HBr in water to a total volume of 750 mL. What is the molarity (M) of this solution? The molar mass of HBr is 80.91 g/mol. Show all work. Question: You want to prepare a 1.2 M FeCl3 You only have 6 mL of a 3.6 M FeCl3 on hand. How many mL of 1.2M FeCl3 solution can you prepare? Show all work. Show Less