How many grams are in 0.89 moles of Beryllium iodide, BeI2?

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Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Compare and contrast physical changes with chemical changes.

What is the lowest number energy level where a d sublevel is found