Describe how current climate trends (from 1880 to 2010) might change the pattern of warming and
cooling shown on the Vostok ice core graph.

Compare and contrast the bohr model and the electron cloud models of the atom.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?