Consider the reaction below. The initial concentration of I−3 is 0.0375 M, and the initial concentrations of I2 and I− are each 0.0 M. If the equilibrium constant is Kc=0.25 under certain conditions, what is the equilibrium concentration of I−3?

c is the answer because when something is left after something evaporates that shows the chemical change.

it means there are 3 atoms of oxygen

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.