Given:
2.60 mol of potassium chloride (KCl)
Three steps to converting moles of a substance to grams:
1) Determine how many moles are given in the problem.
2) Calculate the molar mass of the substance.
3) Multiply step one by step two.
1) 2.60 mol
2) These are their atomic masses:
Potassium, K, has 39.0983 g/mol
Chlorine, Cl, has 35.453 g/mol
Total molar mass of potassium chloride is: 39.0983 g/mol + 35.453 g/mol = 74.5513 g/mol
3) 2.60 mol * 74.5513 g/mo = 193.83338 grams
193.83338 grams rounded to 2 significant places 193.83 grams.
