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

3kg

Explanation:

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?

mass of sand=10kg

mass of sodium carbonate=0.5kg

calcium carbonate=1.5kg

glass bowl=9kg

SiO2+CaO+NaCO3>Glass bowl+residue

10+0.5+1.5=9+x

x=12-9

x=3kg

the mass of material  wasted is 3kg