Which energy transition may take place in the atom if its electron has absorbed a photon? O A. n= 5 to n=1
O B. n= 3ton=2
O C. n = 5 to n =2
O D. n = 1 to n = 3
O E. n = 3 to n = 1

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 does x represent in the formula for the compound xcl4?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?