What is T in the equation G = H - TS? A.
The temperature in kelvins at which the reaction is happening
B.
The temperature in degrees Celsius at which the reaction is run
C.
The temperature required to make the reaction spontaneous
D.
The temperature at which the Gibbs free energy is zero

The answer is A.

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.