Is a health bar that helps rescue workers perform in low-oxygen conditions as well as they can perform in a normal-oxygen environment possible? What is your reasoning?

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).

1 is the answer to this problem

they are all solids.