In a laboratory experiment, a student burns a marshmallow that has 13.5 Calories (56.7 kJ). If it was burned completely, ideally, how much heat energy would it give off?

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

How do you know when a chemical reaction has occurred