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A chemistry student needs 10.0 mL of acetone for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of acetone is 0.790 g cm .

Calculate the mass of acetone the student should weigh out. Be sure your answer has the correct number of significant digits.

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Answer:

The student has to weigh 7.9 ±0.1 grams

Explanation:

Density of acetone : 0.790 g/cm³

If the student has to measure 10.0 mL of acetone, he can weigh an specific mass.

Density of acetone = Mass of acetone / Volume of acetone

cm³ = mL

0.790 g/cm³ = Mass of acetone / 10 cm³

0.790 g/cm³  . 10cm³ = 7.9 g