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aplastic substance is reheated but won't soften enough to be remolded. his substance must be a
a. thermoplastic material
b. thermosetting polymer
c. synthetic monomer
d. natural polymer

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

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.