Choose all the answers that apply.

The Earth .

has a circular orbit around the sun

is tilted 23 1/2° on its axis

rotates from west to east

bulges slightly at the equator

revolves around the sun once every 365 1/4 days

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?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which metal exist in liquid state and can be cut with knife ?