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11 Nov 2019
iy gans of SnClo were present in the sample? SHOW WORK. (7 e) what is the % SsCL-SHO in the sample? SHow wORK. (5 pts) 6. Three solutions of known Cu molarities were prepared as steps necessary to molarities were prepared as steps necessary to analyze for the percent copper in brass The Cu molarity and its corresponding absorbance at 620 mja (foe each of the preparod solutions) is given below. M (Cu) Absorbance 0.0160 0.119 Solution 2 0.0320 0.238 Solution 3 0,0480 0.357 e) Using the partially constructed plot given, below make a standard plot of Absorbance [Cu", M. (Io pts) Plot of Absorbance vs. [(Cu?"1 0.500 0.400 0.300 0.200 0.100 0.000 0.00000.0100 0.0200 0.0300 0.04000.0500 [Cu -1, M b) If after dissolving an unknown brass sample in 8 M nitric acid, followed by sample dilation and fitration, yielded a solution whose absorbance at 620 mμ was 0.315, then what is the molarity of the C in the prepared brass sample? (5 pts)
iy gans of SnClo were present in the sample? SHOW WORK. (7 e) what is the % SsCL-SHO in the sample? SHow wORK. (5 pts) 6. Three solutions of known Cu molarities were prepared as steps necessary to molarities were prepared as steps necessary to analyze for the percent copper in brass The Cu molarity and its corresponding absorbance at 620 mja (foe each of the preparod solutions) is given below. M (Cu) Absorbance 0.0160 0.119 Solution 2 0.0320 0.238 Solution 3 0,0480 0.357 e) Using the partially constructed plot given, below make a standard plot of Absorbance [Cu", M. (Io pts) Plot of Absorbance vs. [(Cu?"1 0.500 0.400 0.300 0.200 0.100 0.000 0.00000.0100 0.0200 0.0300 0.04000.0500 [Cu -1, M b) If after dissolving an unknown brass sample in 8 M nitric acid, followed by sample dilation and fitration, yielded a solution whose absorbance at 620 mμ was 0.315, then what is the molarity of the C in the prepared brass sample? (5 pts)
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Beverley SmithLv2
9 Sep 2019
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