If the element sulfur, s, was to lose two electrons per atom, the net ion charge of each atom would be:

Explanation:

It is known that upon losing an electron an atom tends to obtain a positive charge. Whereas upon gaining an electron an atom tends to obtain a negative charge.

Atomic number of sulfur is 16 and its electronic configuration is .

So, when a sulfur atom lose two electrons per atom then it will acquire a +2 net ion charge.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.