Calculate the energy of the green light emitted per photon by a mercury lamp with a frequency of 2.33 x 10^14 Hz

In an oxidation-reduction reaction, oxidation is what happens when a reactant

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead