Consider a process in which 1.00 mil h2o(l) at -5.0 celsius solidifies to ice at the same temperature. calculate the change in entropy of the sample, of the surroundings and the total change in entropy. is the prices spontaneous? repeat the calculations for a process in which 1.00 mol h2o(l) vaporizes at 95 celsius and 1.00 atm.

data given: cpm h20(s) 37.6j/(k* h20(l) 75.3j/(k* h20(g) 33.6—-standard enthalpy of vap and fusion are 40.7 and 6.01 kj/mol respectively

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

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?

An observation that requires measurement is called quantitative observable or qualitative