What equivalence factor should you use to convert from #4.28 x 10^19# molecules of oxygen (#O_2#) to moles of #O_2#?

1 Answer
Sep 3, 2016

Answer:

Divide by #"Avogadro's Number", 6.022xx10^23*mol^-1#

Explanation:

#1*"mole"# of stuff specifies #"Avogadro's Number", 6.022xx10^23*mol^-1#, i.e. #N_A# individual items of stuff.

If I have #4.28xx10^19# dioxygen molecules, I have a molar quantity of #(4.28xx10^19)/(6.022xx10^23*mol^-1)# #=# #??# moles of #O_2#?

Since I know (how?) that #1# #"mole " O_2# has a mass of #32.00*g#, what is the mass of your quantity?