How is molar mass of an element used to convert from number of mass in grams?

1 Answer
Dec 3, 2016

Answer:

#"Number of moles"# #=# #"Mass (g)"/("Molar mass "("g"*"mol"^-1)#

Explanation:

The given quotient is certainly sound dimensionally, in that #g/(g*mol^-1)# reduces to #1/(mol^-1)# #=# #mol#.

And thus a #12*g# mass of carbon #-=(12*g)/(12*g*mol^-1)=1*mol.#

Are you happy with this?

If you are how many moles does a #32*g# mass of elemental oxygen, and a #71*g# mass of elemental chlorine represent?