What mass of CO2 will sublimate given 500 kJ of energy at room temperature? (ΔHsub=26.1kJmole)

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices

How does nathan’s hypothesis lead to new investigations