Nancy wants to find out how the steepness of a hill's slope affects the amount of soil that erodes from it. she has soil, a long pan, and a pile of books with which to build a model hillside. she has a watering can to model rainfall. in her experiment, which of the following factors should nancy make sure that she does not change?

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.

Why do electrons further from the nucleus have more energy