posted by Lena .
Silicon carbide, commonly known as carborundum, is a very hard and abrasive substance. The compound is prepared by heating silicon dioxide in the presence of graphitic carbon:
SiO2(s) + 2C(s) --> SiC(s) + CO2(g)
How many grams of silicon carbide can be formed from 55.0 g of graphite and 20.0 g of silicon dioxide?