Calculate the mass and charge of one mole of electrons

I don't know if this is really helpful or not, but an electron weights 0.00000000000000000000000000091 grams.

Explanation:

May I have brainliest please? :)

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.