1 point Which statement describes the distribution of charge in an atom? (1) A neutral nucleus is surrounded by one or more negatively charged electrons.

(2) A neutral nucleus is surrounded by one or more positively charged electrons

(3) A positively charged nucleus is surrounded by one or more negatively charged electrons.

(4) A positively charged nucleus is surrounded by one or more positively charged electrons.

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?

Which three statements represent the benefits of performing experiments using computer simulations?

There are approximately 15 milliliters (ml) in 1 tablespoon (tbsp). what expression can be used to find the approximate number of milliliters in 3 tbsp?