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Question:

AP Chemistry help!!!?

Can someone answer this question:The aluminum in a package containing 75 sq ft of kitchen foil weights approx12 ozAluminum has a density of 2.70 g/cm3What is the approximate thickness of the aluminum foil in millimeters? (1oz 1.00 g/cm3)

Answer:

volume mass / density (12 oz.)(28.35 g / oz.) / (2.70 g / cm^3) 126.0 cm^3 Convert square ft to square cm: (75 ft^2)(12^2 in^2 / ft^2)(2.54^2 cm^2 / in^2) 6.968e4 cm^2 Get thickness: (126.0 cm^3) / (6.968e4 cm^2) 1.81e-3 cm
Without seeing it in person, I can only guess, but I'm sure it's not feltFelt would not drape well in a doll dressI would suggest it's a brushed twill, maybe a cotton/poly blend.

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