The aluminum foil in a package is usually 75ft2 and has a mass of 12 ounces. aluminum has a density of 2.70 grams per milliliter. what is the approximate thickness of a sheet of aluminum foil in millimeters? one inch=254cm; one pound=454grams; one pound =16 ounces

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Salt in oceans comes from and of rocks

What is the enthalpy of combustion (per mole) of c4h10 (g)? –2,657.5 kj/mol –5315.0 kj/mol –509.7 kj/mol –254.8 kj/mol