1 point Determine the value of the enthalpy change, Delta H vap, for the evaporation of one
mole of water using the information below.
H2O(l) → H2O(g)
CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(1)
CH4(g) + 2O2(g) → CO2(g) + 2 H2O(g)
Delta H= -890.5 kJ/mol
Delta H=-802.3 kJ/mol

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 mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules