What is the mass of #12.04xx10^23# #"formula units"# of #MgCl_2#?

1 Answer
Jul 14, 2017

Answer:

Well, we know that #6.022xx10^23# #MgCl_2# formula units have a mass of #95.21*g#.......

Explanation:

Do we know this? All I have is taken the molar mass of magnesium chloride, and translated this into a NUMBER of magnesium chloride formula units...

And here we gots #12.04xx10^23# #MgCl_2# formula units.........

And thus we gots the product...........

#(12.04xx10^23*"formula units")/(6.022xx10^23*"formula units"*mol^-1)xx95.21*g*mol^-1#....

And I make this a mass of #190.42*g#........do you agree?

Is the product dimensionally consistent?