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Determine the number of moles of C in each sample. 0.142 mol C2H6 Express your answer...

Determine the number of moles of C in each sample.

0.142 mol C2H6

Express your answer using three significant figures.

Part C

5.23 mol C4H10

Express your answer using three significant figures.

Part D

24.3 mol C8H18

Express your answer using three significant figures.

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