What happens with the heat or energy Earth receives from the Sun? Most is trapped on Earth and some is reflected back out to space.
It's all absorbed and trapped on Earth.
Some is trapped on Earth and most is reflected back out to space.

It's all absorbed and trapped on Earth.

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.