Heat transfer (45 pt). a single-pass counterflow shell-and- tube heat exchanger is used to warm up liquid glycerin. the heat exchanger comprises "n" tubes of 0.75" and 0.532" outer and inner diameter respectively, and 5m long. liquid glycerin enters the heat exchanger at 16 degc and exits at 60 degc. the mass flow rate of liquid glycerin processed is 5 kg/s. the process uses saturated steam at 1 atm (100 degc, enthalpy of vaporization 2257 kj/kg) on the shell side, which exits the heater as saturated liquid. the shell-side convective heat transfer coefficient can be assumed to be 5000 w/m2k to simplify calculations it can be assumed that the bulk velocity in each tube is 1.80 m/s, all tubes having the same heat transfer coefficient. it can also be supposed that the conductivity resistance of the tube is negligible determine: a) mass flow rate of steam, assuming all the steam is condensed (10 pt) b) log-mean temperature difference (5 pt) c) overall heat transfer coefficient, u (20 pt) d) area of the heat exchanger. how many tubes are required? (10 pt)

Actual ingredients of lab (the cookies i am actually making) 1/2 cup sugar 1/2 cup brown sugar 1 1/3 stick margarine 1 egg 1/2 tsp salt 1 tsp vanilla 1/2 tsp baking soda 1 1/2 cup flour 1 1/3 cup chocolate chip can you answer the questions below ? discussion 1. suppose you are given the following amounts of ingredients: 1 dozen eggs 24 tsp. of vanilla 1 lb. (82 tsp.) of salt 1 lb. (84 tsp.) of baking soda 3 cups of chocolate chips 5 lb. (11 cups) of sugar 2 lb. (4 cups) of brown sugar 1 lb. (4 sticks) of margarine a. for each ingredient, calculate how many cookies could be prepared if all of that ingredient were consumed. (for example, the recipe shows that using 1 egg- with the right amounts of the other ingredients- yields 24 cookies. how many cookies can you make if the recipe is increased proportionately for 12 eggs? ) b. to determine the limiting reactant for the new ingredients list, identify which ingredient will result in the fewest number of cookies. c. what is the maximum number of cookies that can be produced from the new amounts of ingredients?

Nonpoint source pollution is difficult to control because it

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.