Which of the following MOST accurately describes the arctic tundra?

Ineed with my science work! it’s due tomorrow!

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .