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Calcium carbonate is a chemical compound with the ...

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Calcium carbonate is a chemical compound with the ...

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Calcium carbonate is a chemical compound with the ...

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Sodium sulfate (also known as sodium sulphate or s...

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An alum (/ˈæləm/) is a type of chemical compound, ...

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Sulfur (also spelled sulphur in British English) i...

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Sodium dodecyl sulfate (SDS) or sodium lauryl sulf...

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The western desert of Egypt was a major source of ...

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