HELP PLEASEE 1. Tiana is participating in a triathlon and you need to calculate her average speed for all three events. She skates 20km in 1.25 hrs. She paddles a kayak 1km in 0.75 hrs. and she Rides her bike 100kmn in 2 hrs.

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.

answersilicon (si); oxygen (o);