If an element has an atomic number of 6 and an atomic mass of 14, how many neutrons does the atom have?

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?

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted