Reaction a is extremely fast whereas reaction b is very slow. based on this information, which of the following statements must be true? a) reaction a must b catalyzed by an enzyme b) the equilibrium constant for reaction a is greater than 1 an the equilibrium constant for reaction b must be less than c) the equilibrium constant for reaction a is less than 1 and the equil ibrium constant for reaction b is greatr than d) reaction a has a lower activation energy barrier than reaction b e) reaction a has a higher activation energy barrier than reaction b 10. which of the following statements are true? a) covalent interactions are vital to the cell because they are reversible b) non-covalent interactions are vital to the cell because they are irreversible c) polyhydroxy aldehydes and ketones make up carbohydrate polymers d) the strength of an electrostatic interaction is highly dependent of its angle (i. e. directionality) e) all of the above are true

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.