In an area where a river has cut deep into Earth, there are several layers of very different rock
exposed. The oldest rock layer is most likely to be
the layer that is
A. below the other layers.
B. the thickest layer.
C. the most rich in fossils.
D. igneous intrusive rock.

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?

In a copper wire, a temperature increase is the result of which of the following

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?