How many moles of #BaF# are there in 41 grams of #BaF#?

1 Answer
anor277
Mar 5, 2016

Do you mean barium fluoride, #BaF_2#. I presume you do, because there ain't no such beast as #BaF#. There are approx. #0.25# #mol# #BaF_2#.

Explanation:

#"Formula mass,"# #BaF_2# #=# #175.34*g*mol^-1#. To get the number of moles, simply divide the mass by the molar mass:

#(41.0*cancelg)/(175.34*cancelg*mol^-1)# #=# #??# #mol#.

Note that we set this up dimensionally, and automatically got the units of #mol#, which might persuade us that we got it right (for once!).

How many moles of fluoride ion are in this quantity?

Related questions
See all questions in The Mole
Impact of this question
1626 views around the world
You can reuse this answer
Creative Commons License