HELP PLEASE When waves travel through water, why do the moving water particles continue to return to their starting positions?

A: Waves transfer matter, but not Energy

B: Waves transfer both matter and energy

C: Waves transfer energy, but not matter

D: Waves don't transfer matter or energy​

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

your parents i think this could be it