1.

What_is_the_approximate_density_of_the_polymer_polytetrafluoroethylene?$

A. 1.8 g/cm<sup>3</sup>
B. 2.2 g/cm<sup>3</sup>
C. 0.6 g/cm<sup>3</sup>
D. 1.5 g/cm<sup>3</sup>
Answer» C. 0.6 g/cm<sup>3</sup>


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