What is the specific charge of Electron ?​

The specific charge of the electron is determined from the accelerating voltage, the magnetic field strength and the radius of the electron orbit. Determination of the specific charge of the electron (e/m0) from the path of an electron beam in crossed electric and magnetic fields of variable strength.

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Qm=1.75882001076(53)×10¹¹C•kg-¹

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.