What conclusions about solubility can be drawn from the information

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Which compound most likely has the greatest bond energy?

Which method would be best to separate a mixture of sand and gravel