Analysis of Vitamin C Commercial vitamin C containing 100 mg per tablet can be used. Perform the following analysis three times, and find the mean value (and relative standard deviation) for the number of milligrams of vitamin C per tablet. 1. Dissolve two tablets in 60 mL of 0.3 M H2SO4, using a glass rod to help break the solid. (Some solid binding material will not dissolve.) 2. Add 2 g of solid KI and 50.00 mL of standard KIO3. Then titrate with standard thiosulfate as above. Add 2 mL of starch indicator just before the end point. How do I determine the ascorbic acid content of the vitamin C tablet?

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?