t is frequently necessary to perform dilutions of a stock solution in the laboratory. If you were instructed to make a 1:20 dilution of a stock solution to arrive at a final volume of 500, how much stock solution would you need to pipet

What happens when an acid dissolves?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?