Chromium has four naturally occurring isotopes; cr-50, cr-52, cr-53, and cr-54. if the average atomic mass of chromium is 51.996 amu, which isotope of chromium is found in the greatest abundance? a) cr-50 b) cr-52 c) cr-53 d) cr-54

well in order to answer this question you have to provide more information < 3

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.