In the periodic table how many elements could be classified as metals in group iv?

Which is a characteristic of mixtures?

What is the overall order of reaction for rate = k[no]2[o2]

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