You may have noticed that there is an increase in reservoir water usage. This is not a mistake! During this time period, many dams were built on rivers, increasing the number and size of reservoirs.
How could the reservoirs lose water?

The reservoirs could lose water through evaporation. ... Water usage didn't increase even as the population grew because people were more efficient in their water usage.

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.

what are the statements