How does the Relative Molecular Mass change in heat combustion of an alcohol? :: GCSE Chemistry Coursework Investigation

How does the sexual congress Molecular Mass change in heat combustion of an alcoholic beverageic drink?PlanningIntroduction============As alcohol burns in parentage it gives bug out faculty as heat and light. I am release to investigate how the energy railroad siding of an alcohol in combustionchanges, with change magnitude relative molecular mass, or RMM. RMM is thesum of the atomic masses of each atom in the molecule. Using thealcohols Methanol, Ethanol, Propan-1-ol, Butan-1-ol and Pentan-1-ol,I testament plan, and complete an taste that tests the shout outionbelow.======================================================================Prediction And Theory=====================In the combustion of alcohols in air, the alcohol reacts with oxygenmolecules, to create ampere-second dioxide and water. Many bonds are brokenin the process using up energy. At the same time, the atoms reforminginto the new molecules of carbon dioxide and water give out energy. Inthe combustion of alcohols, the energy created, when forming bonds ordain always be much that what is lost, when breaking bonds, this givesus excess energy. This energy is given out primarily as heat, but alsoas light and sound. As energy is given out it is called an exothermicreaction. If the frigid were true, it would be an endothermicreaction. It is never possible to calculate exact energy change byexperimentation due to inaccuracies and energy waste, so we practice bondenergy calculations give the exact theoretical energy change. stick to energy calculations show that the higher the RMM the more(prenominal) energywill be produced for the same weight of fuel (RMM is the sum of theatomic masses of all atom in the molecule). This is because as theRMM developments there are more atoms and therefore, more bonds to bebroken and then made. As, when burning alcohols, this process givesout energy, the more bonds go through this process, ie as the RMMincreases the more energy should be released. The calculations alsosuggest that for every carbon atom you add to the orbit of an alcoholthe energy out should increase by618 Kj/mol. I predict then, that as the RMM goes up then the energychange will pulsate increasingly more negative i.e. more energy is givenoff. The RMM will be proportional to the final energy created as bothshould increase by the same number each time, (RMM by 14 as one C and2 H atoms are added, and the energy out by 618KJ/mol). This willtherefore result in a straight-line on the graph. The bond energycalculations show how much energy should be released, invoice forexperimental inaccuracies however, I expect the experimental output tobe substantially less.Proposed MethodI am going to test how the energy output per mole in the combustion of