9.44 For each of the following solutions, calculate the: a. grams of 2.0% (m/m) NaCl solution that contains 7.50 g of NaCl b. milliliters of 25% (m/v) NaF solution that contains 4.0 g of NaF c. milliliters of 8.0% (v/v) ethanol solution that contains 20.0 mL of ethanol 9.45 Calculate the molarity of each of the following: a. 2.00 moles of glucose in 4.00 L of a glucose solution b. 4.00 g of KOH in 2.00 L of a KOH solution c. 5.85 g of NaCl in 400. mL of a NaCl solution 9.46 Calculate the molarity of each of the following: a. 0.500 mole of glucose in 0.200 L of a glucose solution b. 73.0 g of HCl in 2.00 L of a HCl solution c. 30.0 g of NaOH in 350. mL of a NaOH solution
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9.47 solutions
Ronald P.
1.0) Classify each as being either a solution or an emulsion (colloid): a. Maple syrup b. IV saline drip c. Whole milk d. Eye drops e. Moisturizing hand cream 2.0) The solubility of ascorbic acid (vitamin C) is 33.0 grams/100g of H2O at 0°C. Suppose, at that temperature you take 27.0 grams of ascorbic acid and stir it into 100g of water. Will you have an unsaturated, saturated, or supersaturated solution? 3.0) Calculate the molarity of the following solutions (WATCH your units- Molarity is moles/liter so volumes must be in liters!): a. 3.00 L of solution that contains 0.750 mol of solute. b. 250 ml of solution that contains 0.630 mol of solute. c. 0.160 mol of solute put into a flask and enough distilled water is added to give 500 ml of solution. 4.0) Calculate the molarity of the following solutions: a. A sample of NaCl weighing 0.190 grams dissolved in enough water to make 10.0 ml of solution. b. A 7.60 gram sample of glucose (C6H12O6) dissolved in enough water to make a 200 ml solution. c. 25 ml of solution that contains 1.75 grams of potassium sulfate (K2SO4) d. 4.50 grams of sodium hydroxide (NaOH) dissolved in 300 ml of water.
Adi S.
12.39 Calculate the molarity of each of the following: a. 2.00 mol of glucose in 4.00 L of a glucose solution b. 4.00 g of KOH in 2.00 L of a KOH solution c. 5.85 g of NaCl in 400. mL of a NaCl solution 12.40 Calculate the molarity of each of the following: a. 0.500 mol of glucose in 0.200 L of a glucose solution b. 73.0 g of HCl in 2.00 L of a HCl solution c. 30.0 g of NaOH in 350. mL of a NaOH solution 12.41 Calculate the grams of solute needed to prepare each of the following: a. 2.00 L of a 1.50 M NaOH solution b. 4.00 L of a 0.200 M KCl solution c. 25.0 mL of a 6.00 M HCl solution 12.42 Calculate the grams of solute needed to prepare each of the following: a. 2.00 L of a 6.00 M NaOH solution b. 5.00 L of a 0.100 M CaCl2 solution c. 175 mL of a 3.00 M NaNO3 solution 12.43 For each of the following solutions, calculate the: a. liters of a 2.00 M KBr solution to obtain 3.00 mol of KBr b. liters of a 1.50 M NaCl solution to obtain 15.0 mol of NaCl c. milliliters of a 0.800 M Ca(NO3)2 solution to obtain 0.0500 mol of Ca(NO3)2 12.44 For each of the following solutions, calculate the: a. liters of a 4.00 M KCl solution to obtain 0.100 mol of KCl b. liters of a 6.00 M HCl solution to obtain 5.00 mol of HCl c. milliliters of a 2.50 M K2SO4 solution to obtain 1.20 mol of K2SO4 12.45 Calculate the volume, in milliliters, for each of the following that provides the given amount of solute: a. 12.5 g of Na2CO3 from a 0.120 M Na2CO3 solution b. 0.850 mol of NaNO3 from a 0.500 M NaNO3 solution c. 30.0 g of LiOH from a 2.70 M LiOH solution
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