To vaporize a 3.00 g of a compound with a molecular mass of 72.02 g requires 652 J of heat. What is the heat of vaporization of benzene in kJ/mol

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.