What is the mass/volume percent concentration of a solution prepared by dissolving 72.5 g of sodium hydroxide NaOH, in enough water to produce 850.0 mL of solution? State your answer to 3 significant figures

Which best describes how johannes kepler developed his laws of planetary motion

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

When balancing a chemical equation: