Lesson: Chapter 7 — Quantification of Elements and Compounds

7.4. The mole 4 of 8 Reset answers

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Question 4

What mass must be weighed out to obtain one mole of glucose molecules? (M_r: C₆H₁₂O₆ = 180)

A 180 g B 12 g C 23 g D 58.5 g

The right answer is the one marked above.

180 g. To take one mole of molecules, weigh out the relative molecular mass in grams.

23 g is a mole of sodium atoms and 58.5 g a mole of sodium chloride — different substances altogether.

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