Propane (C3H8) is burned in oxygen to produce carbon dioxide and water. How much heat is given off when 3.0 mol C3H8 are reacted with 5 mol O2?
1. 672 kJ
2. 1555 kJ
3. 2012 kJ
4. 4435 kJ
5. 6048 kJ
6. 7392 kJ
7. 916 kJ
8. 5122 kJ

Why does his teacher ask him to balance the equation by including the correct coefficient

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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?