If the density and volume of an object is known, what can also be found?

the mass of the object
the shape of the object
the size of the object
the thickness of the object

The mass of the object can also be determined if the density and volume of an object are known.

a

explanation:

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.