A 250 mL solution of barium hydroxide found to have a pH of 12.450. What mass of barium hydroxide is dissolved in this solution?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car