PLEASE HELP! You need to calculate the enthalpy change (H^0) of the reaction AB-->C How can the enthalples given for the reaction steps below be combined to
give the overall change in enthaly
280
CHAD

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

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.

what is the question here. i think you messed up.