Which of the following are characteristics of a protein? select all that apply. a. it is made of amino acids. b. it has long chains of carbon molecules with only hydrogen attached. c. it is soluble in water. d. its main function is energy storage.

I believe the answers are A and D

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).