A radio station broadcasts at a frequency of 99.0 MHz. What is this frequency in Hz?

99,000,000

Explanation:

There's a million hertz in a mHz

the answer for sodium is 0.186

the answer for rubidium is 0.251

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).