Which of the following is true when 1 m kcl is diluted to semi-molar kcl?
i. concentrated and diluted kcl contains the same number of moles

ii. water is added for dilution.

iii. kcl is added for dilution.

i and iii
i and ii
ii and iii
i, ii, and iii

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

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?

Why do cells appear different in distilled water than they do in 10% salt water?