Which property of a gas affects the rate at which it spreads throughout a room? boiling point
reactivity
mass
solubility in water

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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).

elements make up everything, and they combine to make compounds.

the answer is c