Approx. 36*g36⋅g? The key part of the answer is NOT the numerical figure but the dimensional analysis.
The product of the dimensions, cancel(mol)xxg*cancel(mol^-1)=g, which we require for a mass......and sometimes this sort of dimensional analysis allows you to check your answer, and determine whether you should divide or multiply.
And remember what a mole represents. It is simply a large number, 6.022xx10^23*mol^-1.....
And here we have 6.022xx10^23*mol^-1xx0.61*molxx2 "sodium" and "chloride" ions..... Now this is dimensionally consistent as before. Is it? Why did I include the 2 factor in the product? Did I make a mistake?
