The main reason for the observed trend is that Explain your reasoning. additional oxygen atoms draw electron density away from more electrons in the valence shell add electron density to more electronegative elements weaken atoms with a larger atomic radius weaken

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.

answer: mole of the gas

answer: mole of the gasexplanation:

you need to stop taking that class