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What Compound Was Used by the Ancient Egyptians and Is

Question 14

Multiple Choice

What compound was used by the ancient Egyptians and is still used today in the removal of visible impurities (cloudiness) in water?


A) sand (SiO2)
B) aluminum(III) hydroxide (Al(OH) 3)
C) slaked lime (Ca(OH) 2)
D) alum (KAl(SO4) 2)
E) chlorine (Cl2)

Correct Answer:

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