Lesson: Chapter 7 — Quantification of Elements and Compounds

Working with moles 7 of 10 Reset answers

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Question 7

How many molecules are there in 0.1 mol of carbon dioxide? (L = 6.022 × 10²³)

A 6.022 × 10²¹ B 6.022 × 10²² C 6.022 × 10²⁴ D 6.022 × 10²³

The right answer is the one marked above.

6.022 × 10²². 6.022 × 10²³ × 0.1 = 6.022 × 10²².

Multiplying by 0.1 drops the index by one: 10²³ becomes 10²². Adding one instead gives 10²⁴.

Answer the question to continue.