If you have 9900 g of donuts, how many donuts do you have if each donut has a mass of 159 g?

How many moles are equivalent to 55.5g of nano3

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.