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It's called a mortar and pestle and is used to grind, crush and mix solids. In chemistry, trituration (reducing particle size by grinding) can be used to purify a compound containing soluble impurities. The compound is ground up using the mortar and pestle then is rinsed in a solvent in which the impurity will dissolve but the desired compound will remain.

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13y ago
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11y ago

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Q: In the chemical laboratory why do scientists use a mortar and pestle?
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