The heat of vaporization of isopropanol (C3H8O) is 158.5 -. How much energy in calories is absorbed when 37. g of isopropanol is vaporized? Be sure your
g
answer has the correct number of significant figures.
First, we need to calculate the amount of energy absorbed when 37 g of isopropanol is vaporized. Given that the heat of vaporization of isopropanol is 158.5 cal/g, we can use the following formula:
Energy absorbed = mass x heat of vaporization
Energy absorbed = 37 g x 158.5 cal/g
Energy absorbed = 5864.5 cal
Therefore, when 37 g of isopropanol is vaporized, 5864.5 calories of energy is absorbed. The answer has 4 significant figures.