What does the frequency of a wave represent

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

Building glycogen from glucose molecules is an example of

If an atom has 12 protons and 13 neutrons