Chemistry - Lab write up (04-24)

Chemistry - Lab write up (04-24) - Exp. Nine Nuclear...

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Exp. Nine Nuclear Chemistry 04/24/07 Objectives: The objectives in this experiment were to observe radioactive decay, investigate the penetrating power of three kinds of radioactive particles and the effect of shielding and to measure a half-life of a radioactive substance. Procedure: The procedure was followed as shown on pages 73-74 in the Chemistry 112 General Chemistry112 Laboratory Manual for the Spring Semester of 2007. Experimental Data: PART A: Background = 44/3 Data Table 1 Beta (in counts) Gamma (in counts) Alpha (in counts) Trial 1 2845 659 465 Trial 2 2789 670 376 Average 2817 664.5 420.5 Average – Background 2802.33 649.83 405.83 Data Table 2: Shielding Beta (in counts) Gamma (in counts) Alpha (in counts) Aluminum (.05) (1) 1374 (2) 1593 (1) 705 (2) 637 (1) 15 (2) 12 -Average 1483.5 671 13.5 - Average – Background 1468.83 656.3 -1.17 Aluminum (.025) (1) 760 (2) 649 (1) 592 (2) 674 (1) 6 (2) 9 -Average 704.5 633 7.5 - Average – Background 689.83 618.33 -7.17 Lead (.064) (1) 8
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Chemistry - Lab write up (04-24) - Exp. Nine Nuclear...

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