An electron travels at the speed of 2.5*10^10 cm per second, calculate this in miles per hour. i need to know this fast!

Which of the following statements best explains why chemistry is testable a) it can measure data by experiments b) it cannot add new evidence c) it cannot be verified d) it is biased

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate according to the following equation:

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.