Rock N Roll free essay sample

American culture is defined by rock n roll music and race, sexuality and generational conflict was a major factor in culture definition. Rock and rolls complex relationship to race might best be illustrated by the ways black performers bleached their music in order to get heard by America. Altogether uses the term bleaching to describe how music was made white to be heard by white audiences and sold to white audiences. Bleaching included selling the rights to their music or by earning royalties from record sales to white performers (p 51).White artists would make changes to black musicians music and make it into number 1 hits. An example, of this is Willie Mae Big Mama Thornton who first recorded Hound Dog (p 52). According to Altogether, Elvis Presley made some changes to the tempo and lyrics and his version made it to number 1 on the country and charts (pop). Often independent labels would take black artists songs and put white pop singers on the covers or have them sing the songs. The first set of graphs to be drawn show concentration against time,   and were used to calculate half-lives for the various reactions   (Graphs 1 and 2). The second set of graphs drawn were identical to the   first set, but rather than calculating half-lives, they were used to   find the gradient at five points along each graph (Graphs 2 and 5). Calculating the gradient at these points gave the rate of the reaction   at five different concentrations. From this a final set of graphs were   drawn showing the rate of reaction against concentration (Graphs 3 and   6). After studying the results gained, and drawing these graphs, it was   found that out of all of the results recorded, all were included in   the final graphs and used to draw conclusions from. There were no   significantly anomalous results recorded, as all of them seemed to   follow the same pattern when plotted on the graphs. I felt that there   was no reason to ignore or discard any of these results. For H2O2, Graph 1shows that the half-life increases very gradually,   which initially might suggest that the reaction is second order with   respect to H2O2. However, this increase is very gradual, and when   Graph 3 is studied, it is clear that the rate of the reaction is   directly proportional to the concentration. After studying Graph 1   carefully and checking its accuracy alongside the actual results, I   have decided that because the increase in the half-lives is only   gradual and Graph 3 clearly shows that the rate is proportional to the   concentration, this reaction is first order with respect to H2O2. Graph 1 holds a number of possible areas where errors may occur and   this could explain why the half-life is not constant. The actual   process of drawing the graphs provides a number of sources for error. Drawing an accurate curve freehand is quite difficult requiring a   steady and smooth action, and although this skill can be improved with   practise, it still provides sources of error. Also, the calculating of   the half-lives requires further drawing using a ruler that is only   accurate to the nearest millimetre. Therefore, after studying the results gained from the experiments,   using chemical knowledge, and considering where any errors could have   occurred in this analysis, it can be deduced the order of the reaction   with respect to H2O2 is first order. For KI, the results shown in the graphs 4, 5, and 6 show a similar   problem as found with H2O2, Graph 4 shows a gradually increasing   half-life, and Graph 6 shows clearly that the rate is proportional to   the concentration of KI. Therefore, for the same reasons as already   stated above for the reactions concerning H2O2, I deduce that the   order of the reaction with respect to KI is also first order. It is now possible to express these results in the form of a rate   equation, this will show the order of the reaction with respect to the   individual reactants, but will also allow us to determine the overall   order of the reaction.