CHEM 103 EXAM LATEST UPDATE QUESTIONS AND CORRECT ANSWERS ALREADY GRADED A+
2. C7H5NOBr C=84.07 H=5.04 N=14.01 O=16 Br=79.90 =199.02 MW C = 84.07/199.02 X100 =42.24% H= 5.04/199.02 X100 =2.53% N= 14.01/199.02 X100 =7.04% O=16/199.02 X100 =8.04% Br= 79.90 /199.02 X100 =40.15% 1. %Al = 2 x 26.98/342.17 x 100 = 15.77% %S = 3 x 32.07/342.17 x 100 = 28.12% %O = 12 x 16/342.17 = 56.11% 2. %C = 7 x 12.01/ 199.02 x 100 = 42.24% %H = 5 x 1.008/ 199.02 x 100 = 2.53% %N = 1 x 14.01/199.02 = 7.04% %O = 1 x 16.00/199.02 x 100 = 8.03% %Br = 79.90/199.02 x 100 = 40.15%
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chem 103 exam latest update questions a