On the peak of Kilimanjaro the atomospheric pressure can be as low as 0.20 atm if the volume of an oxygen tank is 10.0L at what pressure must the tank be filled so the gas inside would occupy a volume of 1.2 times 10^3 L at this pressure

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

How is the atomic number of a nucleus changed by alpha decay

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