6K + B₂O₃
-->
ЗK2O + 2В
If 10.5 moles of B203 react completely, how many moles of K20 forrn?
Look at picture ASAP will mark as brainlist

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.