If a 40 g sample of NaCl is composed of 39.34% Sodium, how many grams of
that sample are Sodium?

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 empirical formula for c4h8o2

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.