How many moles of potassium iodide, KCI, are there in 50 grams?
To get our answer we just need to do some stoichiometry:
The molar mass of KCl is 74.55
50 grams KCl
As presented this problem is rounded to 1 sig fig since 50 grams is 1 sig fig.
Thus the rounded answer would be 0.7 mols