An aqueous solution is made with the salt obtained from combining the weak acid hydrofluoric acid, HF, and the weak base methylamine, CH2NH2. Is the solution acidic, basic, or neutral

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

Tell me the iupac name of the following compounds:

The fact that the total amount of energy in a system remains constant is a(n)