A perchlorate (ClO4 - ) ion-selective electrode immersed in 50.0 mL of unknown perchlorate solution gave a potential of +358.7 mV. When 1.00 mL of 0.050 M NaClO4 was added, the potential changed to +346.1 mV. Assuming that the electrode is ideal, find the concentration of ClO4 - in the unknown.

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

2. you__turn left on a red light if you are in the left-most lane of a one-way street, you're turning into the left-most lane of a one-way street, and no nearby sign prohibits the turn.

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?