PLEASE ANSWER ALL QUESTIONS
1. (1 pt) ______ Calculate the volume of 0.00500 M stocksolution needed to make 10.00 mL of 0.00300 M solution.
            a. 16.7 mL
            b. 6.00 mL
            c. 0.0600 mL
            d. 3.00 mL
2. (2 pt) ______ If a solution sample has an extinctioncoefficient of 36.0 L mol-1cm-1, a pathlengthof 1.00 cm, and an absorbance of 0.0900, what is the concentrationof the solution in molarity? (Use Beer’s Law, A = εbc)
            a. 0.003 M
            b. 400 M
            c. 3.24 M
            d. 0.00250 M
3. (2 pt) Â Â ______ What is the molar mass ofCu(C2N2H8)2SO4?(Show the correct significant figures)
            a. 279.83 Â
            b. 183.76
            c. 219.72
            d. 278. Â
4. (1 pt)   ______ What is λmax?
            a. The extinction coefficient of a substance  Â
            b. The wavelength at which a substance absorbs the most light.
            c. The wavelength with the largest value. Â
            d. The frequency of light that is maximum
