How many atoms of He are in 5.69 grams?
O
3.70 x 10 23
O
3.7x10 23
O
8.57 x 10 23
O
8,6 X 10 23

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).

there is none because earth is stationary and flat.