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I need help figuring these out.

  1.  9.9×10−3 mol C

Express your

answer using two significant figures.

2.  23.1 mol Hg

Express your answer using three significant figures.

3.  0.200 mol Na

Express your answer using three significant figures.

Top Answer

(1) 9.910 3 mol C = 0.0099 mol C (has 2 significant figures) Non-zero digits are... View the full answer

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