If the temperature of a gas goes from 200 to 400 K, what should happen to the pressure?

Explanation: In your case, the pressure is halved, so you have P2=12P1 . Once again, the volume is doubled. This means that if you double the temperature and halve the pressure, the volume will increase by a factor of 2×2=4 .

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).

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements