Calculate the molarity of each of the following solutions

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Calculate the molarity of each of the following solutions

Calculate the molarity of each of the following solutions: a. 4.25 g of NH3 in 500 mL of solution b. 1.49 kg of isopropyl alcohol, C3H7OH, in 2.50 L of solution

2. How many grams of calcium chloride are needed to make a 550 mL of a 0.450 M aqueous solution of calcium chloride.

3. The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances that may be discharged into the sewer system. Limits have been established for a variety of substances, including hexavalent chromium, which is limited to 0.50 mg/L. If an industry is discharging hexavalent chromium as potassium dichromate (K2Cr2O7), what is the maximum permissible molarity of that substance?

4. What mass of a 4.00% NaOH solution by mass contains 15.0 g of NaOH?

5. What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19 g/mL and contains 37.21% HCl by mass?

6. What is the concentration of the NaCl solution that results when 0.150 L of a 0.556-M solution is allowed to evaporate until the volume is reduced to 0.105 L?

7. An experiment in a general chemistry laboratory calls for a 2.00-M solution of HCl. How many mL of 11.9 M HCl would be required to make 250 mL of 2.00 M HCl?

8. The following successive dilutions are applied to a stock solution that is 5.60 M sucrose: Solution A = 46.0 mL of the stock solution is diluted to 116 mL Solution B = 58.0 mL of Solution A is diluted to 248 mL Solution C = 87.0 mL of Solution B is diluted to 287 mL What is the concentration of sucrose in solution C?

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