One way to prevent carbon monoxide poisoning is to:

heating system, water heater and any other gas, oil, or coal burning appliances serviced by a qualified technician every year. Do install a battery-operated or battery back-up CO detector in your home.

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).