A 500. mL sample of HCl has a pH of 1.50, how much water needs to be added to the sample to raise the pH to 2.20?

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Problem page a jet airplane reaches 846. km/h on a certain flight. what distance does it cover in 13.0 min? set the math up. but don't do any of it. just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.

H2o is a single atom of wat true or false?