What is number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. a)coefficient b)subscript c) molecule d) reactant

What reaction is taking place? 02 + c3h8 = h20 + co2

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.

Akno3 solution containing 51 g of kno3 per 100.0 g of water is cooled from 40 ∘c to 0 ∘c. what will happen during cooling?