Which of the following correctly describes a compound? (4 points) The atoms are chemically bonded together, and they retain their individual physical and chemical properties. The atoms are not chemically bonded, and there is no set ratio for how the atoms can combine together. The atoms can only combine in fixed ratios, and they can only be separated by a chemical change. The atoms do not retain their individual chemical properties, and they can be separated by physical means

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?

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

An observation that requires measurement is called quantitative observable or qualitative