4.3 Answer both questions of 4.3 4.3A. If my kidney stone weighs 0.423 g, and is considered to be pure calcium oxalate, CaC204, how many of each atom are present in the stone? 4.3B. A ruby known as the Sunrise Ruby is considered to be one of the most valuable gems in the world; since rubies are predominantly aluminum oxide, Al2O3, how many carats is this stone if it contains 9.03*10-2 atoms of oxygen? (1 carat = 200 mg)

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