A chemical change takes place when

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable