The pressure and volume of a sealed syringe of gas are 1.5 atm and 40.0 mL. The plunger is pushed in so that the new volume of the syringe is 15.5 mL.
What is the new pressure of the syringe?

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.