Graphite is the crystalline form of carbon used in lead, Ask an Expert

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Graphite is the crystalline form of carbon used in lead pencils. How many moles of carbon are there in 305 mg of graphite? (b) Manganese (Mn) is a transition element essential for the growth of bones. What is the mass in grams of 1.61 1021 Mn atoms, the number found in 5.00 kg of bone. Use correct amount of significant figures.

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