2) If 8.00 mL of 3.0M HCl is mixed with 750 mg of calcium carbonate, what is the limiting reactant? a. How many moles of excess reactant remain? Karpade

31) You have 500 mL of a 1.25 M Pb(NO3)2 solution. How much solid sodium chloride do you need to add to react all of the lead? ? (HINT: react lead (II) nitrate with sodium chloride) а. 54.6 g b. 44.3 g с. 146 g d. 73.1 g

5. You will also make other concentrations of solutions. If the concentration is to be less than a mole, reduce the mass of the substance accordingly. If the concentration is to be greater than 1M, increase BIOL 1406 the mass added or reduce the volume of water accordingly. Use this formula: Molarity = moles/liter. Example: Make a .5M solution of HCI Name: H = 1.008 Daltons CI = 35.45 Daltons Total = 36.46 Daltons = 36.46 grams .5M = X moles/1 liter .5M * 1 liter = X moles Date Number of moles = .5 .5 * 36.46 = 18.23 grams Add 500 mLs water to 1L volumetric flask, add the 18.23 grams HCI to the water, swirl to dissolve, then add water until it reaches the 1L or 1,000 mL mark. Answer the following questions: 1. How many mL should I use to make a 1M solution of MgBr2? ¶ 2. What is the mass of a mole of NH3? 3. How much CaCO3 should I use to make a 2M solution? 4. How much CaCO3 should I use to make a .25M solution? 5. What are the steps to make a 1M solution of NH3 - give the steps and…

In a laboratory experiment , the reaction of 3.0 mol of H_{2} with 2.0 mol of produced l_{2} 1.0 mol of . Determine the theoretical yield in grams and the percent yield for this reaction. H 2 +I 2 2HI