Crude oil flows at the rate of 1000 kg/h through the inside pipe of a double pipe heat exchanger and is heated from 303k to 363k. the heat is supplied by kerosene initially at 473k flowing through the annular space. if the temperature of approach is (minimum temperature difference) at2 = 10k, determine the following: (i) heat transfer area for co-current flow and (7 marks) (ii) kerosene flow rate. (5 marks) data: specific heat of crude oil = 2.1 kj/(kg. k) specific heat of crude oil = 2.51 kj/(kg. k) overall heat transfer coefficient = 465 w/(m²k) the rate of heat transfer is given by: q = [ń cp at] = [m cp at]k = u. a. atim pht (chem. engg.

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

What three things determine the shape and size of a puddle when water is poured out onto a surface