How many grams of deuterium ?H (atomic mass = 2.0141 u) must be fused to helium “He (atomic mass 4.0026 u) in one second to produce 3000 MJ of energy? [1 u = 1.66 x kg=931.5Mev/c? ]

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.