Us the water displacement method to determine the density of object c (silly putty) initial water level in granduate cylinder = 25ml final water level after placeing silly putty into graduated cylinder = 29ml mass of silly putty = 8 g what is the volume
what is the density

i'm pretty sure its b i might be wrong though!

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

i believe the answer is true.