Sand, also known as silicon dioxide, is the main component of glass. If a glass blower used 10 kg of sand, combined with .5 kg of sodium carbonate and 1.5 kg of calcium oxide to produce a glass bowl with a mass of 9 kg, how much material was wasted?
A) 2 kg
B) 3 kg
C) 12 kg
D) 21 kg
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c) 12 kg material will be wasted
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