lab report on essays

lab report on essays Objective: To detect the amount of particular matter collected from the smoker's end of a cigarette and the amount of second hand smoke released Materials and Methods/Procedures: Two each of a 250 ml filter flask, a piece of filter paper, a 1-hole rubber stopper, glass tubing, a glass funnel and rubber tubing were assembled as required, and the filter flask was attached to a water aspirator. The filter papers were removed, weighed to the nearest 0.001 g, and replaced on the apparatus. A non-filtered cigarette was inserted into the funnel, which was then clamped pointing up. A second funnel was clamped approximately a half inch above the cigarette funnel in order to collect the second hand smoke in the room, and enough space was allowed between the funnels to allow air and catch all of the smoke. The water aspirators were turned on, the cigarette was lit, and the aspirators were adjusted so that the cigarette burned over a period of 3-5 minutes. After the cigarette burned down to the last centimeter, the aspirators were turned off, the cigarette was removed and the filter papers were removed and weighed. The initial weight of the filter paper was subtracted from the final weight. The solids collected from the second hand smoke funnel were divided by the solids collected for the smoker's funnel, and multiplied by 100 to obtain the percent of solids in room smoke. The procedure was repeated with a filtered cigarette and the Results: In the non-filtered cigarette experiment, the initial filter paper weight of the smoker's flask was .223g, while the paper of the room flask weighed .234g. After collecting solids, the weight of the smoker's flask paper was .231g and the room flask paper weighed .241g. The weight of the solids collected were: smoker's flask-.008g, and room flask-.007g. The percentage between room solid smoke and smoker's smoke wa ...