17. What is the volume at STP of a sample of Co, that has a volume of 75.0 ml at 30.0°C and 680 mm Hg?

neutrons are in the middle of the atom and the electrons, which are much smaller.

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).