Moist air at 27 deg c, 1atm, and 50% relative humidity enters an evaporative cooling unit operating at steady state consisiting of a heating section followed by a soaked pad evaporative cooler operating adiabatically. the air passing through the eating section is heated to 45 deg c. next, air passing through a soaked pad exiting with 50% relative humidity. using data from psychrometric chart, determine

a) the humidity ratio of the entering moist air mixture, in kg(vapor) per kg(dry air).
b) the rate of heat transfer to the moist air passing through the heating section, in kj per kg of mixture.
c) the humidity ratio and temperature, in deg c at the exit of the evaporative cooling section.

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2

Two solutions of the same uv-absorbing molecule were analyzed by uv-vis spectroscopy on the same instrument using 1 cm pathlength cells. use data from the table to calculate by what percentage the concentration of solution b is compared to that of solution a.sample absorbance at 315nm a 0.45 b 0.80