Find the concentration if a 840 mL of a 0.75 M NaBr solution has 430 mL more water added to it

Afamily is one another name for a group on the table of elements.

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

What is the molar mass of a gas that has density of 2.054 g/l