At 488 mm hg, a sample of nitrogen gas occupies 609 ml. what volume does the gas occupy if the temperature remains constant and the pressure increases to 757.8 mm hg?
select one:
a. 392
b. 607
c. 0.00529
d. 1000

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.