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Topic 1.4 · Composition of Mixtures

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AP Chemistry · Topic 1.4: Composition of MixturesOpen topic

Original PrepAtlas question. This is not an official College Board question.

Pure compounds P and Q each contain 40.0% carbon by mass. A sample contains both compounds, with no reaction between them, and carbon analysis also gives 40.0% by mass. What can be concluded about the relative masses of P and Q in the sample?

AThe sample must contain a greater mass of P than of Q.BThe sample must contain a greater mass of Q than of P.CThe carbon analysis alone cannot determine the relative masses of P and Q.DThe sample must contain equal masses of P and Q.

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Topic 1.4 · Composition of Mixtures

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