Why cant someone pls help

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

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

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?