In an exothermic reaction, the products have a the reactants. Overall, energy is

Define dew point. i am writing this part to be able to ask the question

Explain that newton first law,second law and third law of motion?

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?