Consider Example 12.10. Suppose the experiment is repeated with 0.032 mol of helium instead with everything else staying the same, what is the amount of heat required now to achieve that process

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.