Each electron can be represented by 4 quantum numbers. The two electrons in the outermost level of strontium are designated at 5 s . How many quantum numbers would these two electrons have in common

How many grams of aluminum will there be in 98g of al2o3?

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.

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!