How many moles of boron are in #1.21*10^24# boron atoms?

1 Answer
Jul 6, 2016

Answer:

Well, in #1# #"mole"# of boron there are #6.022xx10^23# boron atoms.

Explanation:

So, #"moles of boron"# #=# #(1.21xx10^24" boron atoms")/(6.022xx10^23" boron atoms"*mol^-1)#

#=# #"How many moles?"# I count about 2. What is the mass of this molar quantity?