9. A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of two of the gasses are oxygen, 1.00 atm, and carbon dioxide, 5.00 atm. If
the total pressure in the container is 13 atm what is the partial pressure of the
helium?

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

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent