What information does the percent composition of an atom in a molecule give?

A. The relative number of atoms one element contributes to a
molecule

B. The relative amount of mass an atom contributes to a molecule

C. The total number of atoms of that element in a molecule

D. The total mass that element contributes to a molecule

Balance this equation: n2 + h2 > nh3, write the following molar ratios: n2 / n2 / nh3 h2 /

Evaluate this exponential expression,8. (2 + 3)2 – 42

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