Which electron configuration represents an atom in an excited state?

(1) 2-7 (3) 2-8-1

(2) 2-6-2 (4) 2-8-8-2

Ionic bonds, like all chemical bonds, form in order to make the new substance formed

Cocaine causes higher sensitive to light causing a driver to see?

Which term describes the molecule shown below h-c-c-h ethyne c2h2?

Explain the connection between Earth's magnetic field and iron.

Explain why you are more likely to overdose on vitamin a than on vitamin c

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?