If I use the dropper to add 10 mL of drink mix to 50 mL of water, what is the percent by volume of the drink mix in the solution? Percent by volume is calculated the same way as percent by mass, but instead of mass, place the volume of the solute in the numerator (top) and the volume of the solution in the denominator (bottom). *

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.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

it takes on an electronical energy