Given the data shown, what two substances does the unknown mixture contain? table showing test results

Which is a characteristic of mixtures?

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

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?