What is the mass in grams of 2.60 moles of potassium chloride?

To find the mass of 2.60 moles of potassium chloride (KCl), first determine its molar mass. The molar mass of KCl is approximately 74.55 g/mol (39.10 g/mol for potassium and 35.45 g/mol for chloride). Therefore, the mass can be calculated as:

Mass = moles × molar mass = 2.60 moles × 74.55 g/mol ≈ 193.83 grams.