Silicon carbide, SIC, is one of the hardest materials known. Surpassed in hardness only by diamond, it is sometimes known commercially as carborundum. Silicon carbide is used primarily as an abrasive for sandpaper and is manufactured by heating common sand (silicon dioxide,
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at mass of silicon carbide should result when 1.0 kg of pure sand is heated with an excess of carbon?
Interpretation:
The mass of silicon carbide should be calculated.
Concept Introduction:
The expected or theoretical yield of the product depends on the limiting reactant of the reaction. Limiting reactant is the reactant that limits the mass of product formed in the reaction. The reactant other than limiting reactant is known as excess reactant.
The mass of pure sand is 1.0 kg and carbon is present in excess. Thus,
The balanced chemical reaction is as follows:
First calculate the number of moles of sand or
Molar mass of
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