Constructive interference occurs when the amplitudes of two waves combine to produce a wave with a smaller amplitude. t or f

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

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.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false