When a piece of metal was heated in a flame and then dropped into a foam cup calorimeter filled with 200 mL of water at 22.5°C, the temperature of the water rose to 38.7°C. How much heat was transferred from the metal to the water? The specific heat of water is 4.18 J/g-°C

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.