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SiO2 is extracted with water three times as opposed to only once because of water it may contain. It is insoluble in water, so rinsing three times separates it releases any water it may have leaving you only with SiO2, or sand.

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Q: Why is the SiO2 extracted with water three times as opposed to only once?
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Related questions

Why is NaCl extracted with water three times as opposed to only once?

NaCl is extracted three times rather than one time to ensure that the maximum amount of NaCl is extracted from the mixture.


What are three commercial products extracted from seawater?

Salt, water, and gold.


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the majority of water extracted from urine from the Bowman's capsule


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Salt can be extracted from mines or sea water.


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salt is not produced but it is extracted from sea water throught evaporisation of water and then purifying it.


Can water be extracted from a rock?

Yes


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both.


Why does Patagonia have semiarid and arid climates?

because aliens extracted/partially extracted the water millons of years ago


What element is extracted from salt water?

sodium and chlorine


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What elelment is extracted from underground mines with hot water?

Gold (Au), tin (Sn), silver (Ag), and iron (Fe) are extracted from underground mines with hot water.


When was sodium first extracted?

The element Sodium (Na) was first extracted in 1807. It is very soft and burns on contact with water.