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1. |
The toxic environmental pollutant dioxin is 44.8% carbon, 1.25% hydrogen and 44.0% chlorine. Its molecular weight is 320±10 What is the molecular formula of dioxin? |
A. | C10H8O4Cl4 |
B. | C12H6O2Cl4 |
C. | C6H2OCl2 |
D. | C12H4O2Cl4 |
Answer» E. | |