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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