13.) The hydrogenation of ethene gas under standard conditions (T = 298.15 K) shows a decrease in disorder (AS = -0.1207 kJ/(mol•K)) during an exothermic reaction (AH = -136.9
kJ/mol). Determine whether the reaction is spontaneous or nonspontaneous by calculating AG'.
C2H4 (g) + H2 (g) → C2H6 (g)

Which feature do highland climates have that lower elevation areas do not?

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Type the letter that represents the correct location for each particle type below.