How much total energy does the light bulb transfer to the water? The bulb is 25 watts which means 25J of energy for 1 s

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

let that person have a turn to speak : )