These puppies were born in the same litter to the same parents, but they have different traits for the feature of toenail thickness. One puppy has thick toenails, one has thin toenails, and the third has medium toenails. How did these puppies end up with toenail thicknesses that are different from one another even though they have the same parents? How did the gene combinations result in the different traits? *

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.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.