PLS HELPP For the skeletal chemical equation

C2H4(g) + O2(g) → CO2(g) + H2O(g)

what is the coefficient of C2H4 in the balanced

equation?

1. 4

2. 6

3. 8

4. 3

5. 5

6. 1

7. 7

8. 2

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?

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.