Achemical engineer is seeking a steady flow device that can produce low pressure steam at 10 bar and 200◦c from a 1 kg/s stream of high pressure steam at 100 bar and 400◦c. assume steam is a real fluid following the steam tables in appendix a. iii of text. (a) determine if this is feasible with a joule-thomson valve. (b) determine if this is feasible with a turbine that is in contact with a heat reservoir at 450 ◦c that transfers heat at a rate of 500 kw into the turbine. (c) devise your own flow device or set of devices that can accomplish this task, specifying the rate of entropy generation, the rates of any work and/or heat flows, and the temperature of any heat sources/ sinks. note: this is an open-ended design question that can have different design solutions. comment on the practicality of your design.

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?

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit