What type of system are the following? Why? (For each of the following systems, state if the system is open/closed, steady/unsteady, Homogeneous/ Heterogeneous, isolated/ non-isolated) [30] A. an ocean? B. an aquarium? C. a pizza delivery bag? D. a greenhouse?

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?