Which is the first step in the dissolving process? A- the solute becomes like the solvent
B- The solute molecules are carried into the solution
C- The solvent molecules surround the solute particles
D- The solvent molecules are attracted to particles at the surface of the solute

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

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?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.