An aqueous solution of calcium hydroxide is standardized by titration with a 0.193 M solution of nitric acid. If 10.7 mL of base are required to neutralize 29.1 mL of the acid, what is the molarity of the calcium hydroxide solution?

Express the following number in scientific notation. 0.026890 =

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic