Arya drops a small sample of brown iodine into a beaker of water.

arya can conclude that the iodine has dissolved in the water if she observes which of the following?
a.
the iodine spreads evenly throughout the water.

b.
all of the iodine floats at the surface of the water.

c.
the iodine sinks to the bottom of the beaker and does not move.

d.
the water boils and leaves the iodine behind.

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?

What is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5hz a 250 m b 0.1 m c 10m d 0.01 m

One similarity and one difference between an element and a mixture of elements