What sources or bodies of water are included in the earth's water cycle? a. all water on earth and in earth's atmosphere is included in the water cycle. b. only the earth's fresh water is included in the water cycle. c. only the water in the earth's oceans, rivers and lakes (including aquifers) is included in the water cycle. d. only the water in the earth's atmosphere in the form of clouds is included in the water cycle.

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?

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element

Adirect relationship can be represented by: a curve a pie chart