The chemical composition of the repeat unit for nylon 6,6 is given by the formula c12h22n2o2. atomic weights for the constituent elements are ac = 12, ah = 1, an = 14, and ao = 16. according to this chemical formula (for nylon 6,6), the percent (by weight) of carbon in nylon 6,6 is most nearly:

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

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Ibelieve the answer is weathering,hope my answer has you : )