3. If an element has 47 protons and 54 neutrons what is the element and what is its atomic mass?
4. If one atom has 47 neutrons and a mass of 87 and another one has 41 protons and a
mass of 87, are they isotopes of each other?
5. Draw the electron dot diagram for the element Phosphorous.

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

Acurium-245 nucleus is hit with a neutron and changes as shown by the equation. complete the equation by filling in the missing parts. 52

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?