(26 points) (1) The chemical composition of cotton fiber is ...

(1) protein sampling of cellulose oil, burning and the smell of burnt feathers are all wool.

(2) 1) reductant? Oxidant? 2) reducibility of reducing agent 3)Fe? + 2H +？ = Fe 2+ +H 2 ↑

(3)? 1)? 4C m H n + (4m+n)？ O 2？ →? 4m carbon dioxide+? Chemical energy of 2n·H2O

2) So 2? 3)2 No X? + 2xCO？ =? xN 2 + 2x CO 2

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