Given an aqueous acetaminophen standard to prepare 2.0 x 10^-5 M, 4.0 x 10^-5 M, 10.0 x 10^-5 M, and 20.0 x 10^-5 M solutions of acetaminophen in 50 mL flasks, determine the volume of standards required to put into each 50 mL flask.

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.