Kepler‘s investigation of the movement of the planets explained which of the following

Im not quite sure what "the following" answers are, but this is one from a quiz I got 100% on.

Earth is not the center of the universe.

Hope this helps, good luck

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).

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.