Benzoic acid of mass 1.40 g is reacted with oxygen in a constant volume calorimeter to form h2o(l) and co2(g) at 298 k. the mass of the water in the inner bath is 1.40×103g. the temperature of the calorimeter and its contents rises 2.77 k as a result of this reaction.

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)?