What is the standard enthalpy of formation of co(g). given: ah. [c] = -393 kj mol-1. ah.[co] = -283 kj mol-.

110 kJ/mol

Explanation:

The standard enthalpy of a reaction can be calculated with the equation "H=Hp-Hr", where Hp is the enthalpy of the products and Hr the enthalpy of the reactives, in this casi your product is the CO, so -283-(-393) = 110. So the  standard enthalpy of this reaction is 110 kJ/mol.

lol for the pointsss

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.