Which of the following measurements is expressed in three significant figures? a. 420 ml of hydrochloric acid b. 0.003 g of vitamin d c. 622.00 kg of sulfur d. 0.201 l of nitrogen gas

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