E (kJ) 205
C2H4 + HCI
70
C2H5C1
Reaction Coordinate
Which of the following are true?
Choose all that apply.
The value of Ea in the presence of a catalyst would be larger than 205 kJ.
AE is positive.
The value of AE in the presence of a catalyst would be smaller than -70.0kJ
The magnitude of Ea for the reverse reaction is larger than 205 kJ.
The energy of the products is lower than the energy of the reactants.

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

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?

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have