Acompound with an empirical formula of c2h8n and a molar mass of 46 grams per mole.

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

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Asolid that forms and separates from a liquid mixture is called