The element phosphorus is manufactured from a mixture of phosphate rock (Ca3(PO4)2), sand (SiO2), and coke (C) in an electric furnace. The chemistry is complex but is summarized by these two equations.
A. Ca3(PO4)2 + SiO2 --> P4O10 + CaSiO355

B. P4O10 + C -->P4 + CO
How many grams of phosphorus are produced?
How many grams of carbon are consumed?
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