Water is boiling in a clear pot, as shown in the picture. A clear pot full of water sits over gas burner. The water has large bubbles rising in the water. Which takes place as water cycles from the bottom of the pot toward the top? Thermal energy is transferred. Water molecules gain kinetic energy. Chemical energy is transferred. Water molecules gain thermal energy.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

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.

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