Compared to visible light, an electromagnetic wave that has a higher wavelength will also have higher frequency and higher speed higher frequency and equal speed lower frequency and equal speed lower frequency and higher speed

I took the test to find out it's not A or D so it's either B or C.

3 hours because it is a decent distance.

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).