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ARC-Challenge / Mercury_403232 / A researcher uses several procedures to separate a rock sample into different…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A researcher uses several procedures to separate a rock sample into different chemicals. A mass of 50 grams of one chemical is produced. If this chemical cannot be separated into other chemicals, then it is best described as

choices

  • a compound.
  • a mixture.
  • a solution.
  • an element.

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Source and history

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