An unknown compound was found to have a percent composition as follows: 47.0% potassium, 14.5 carbon, and 38.5 oxygen. what is its empirical formula? if the true molar mass of the compound is 166.22 g/mol, what is its molecular formula?

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

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.