Question

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

Answer 1

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?