If the energy came from a nuclear reaction, what mass would have to be converted to energy per year to meet the energy needs of the home? Express your answer using two significant figures

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Me soon im confused much mass would a mole of hydrogen molecules contain? recall that hydrogen is diatomic. g/mol