5. At high pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions, and why? a. It is much greater because real gas partides take up space.

b. It is much less because real gas particles are not moving.

c. It is much less because at high pressures the temperature drops.

d. There is no difference because the gas laws are always obeyed.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.