• You're at the same pharmaceutical company, and they also make magnesium pills. You weigh out 5 tablets (3.2834 grams). And crush them with a mortar and pestle. You take a subsample of 384 mg and dissolve it in acid, making it to a final volume of 250mL. • You then take 50 mL and dilute it to 250mL volumetrically. • You further dilute the sample by taking 15 ml and diluting it to 250mL. • You run this on a varian AA with your standards and get the following response: Response (ABS) 0.546 1.134 2.135 1.634 Solution • 1.0 ppm Mg 2.0 ppm Mg 4.0 ppm Mg Sample ● ● ● • Calculate the amount of Mg in one pill. • Line of best fit y = 0.5255x+0.0455
• You're at the same pharmaceutical company, and they also make magnesium pills. You weigh out 5 tablets (3.2834 grams). And crush them with a mortar and pestle. You take a subsample of 384 mg and dissolve it in acid, making it to a final volume of 250mL. • You then take 50 mL and dilute it to 250mL volumetrically. • You further dilute the sample by taking 15 ml and diluting it to 250mL. • You run this on a varian AA with your standards and get the following response: Response (ABS) 0.546 1.134 2.135 1.634 Solution • 1.0 ppm Mg 2.0 ppm Mg 4.0 ppm Mg Sample ● ● ● • Calculate the amount of Mg in one pill. • Line of best fit y = 0.5255x+0.0455
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 95QRT
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Transcribed Image Text:You're at the same pharmaceutical company, and they also make magnesium pills. You weigh
out 5 tablets (3.2834 grams). And crush them with a mortar and pestle. You take a subsample
of 384 mg and dissolve it in acid, making it to a final volume of 250mL.
• You then take 50 mL and dilute it to 250mL volumetrically.
• You further dilute the sample by taking 15 ml and diluting it to 250mL.
• You run this on a varian AA with your standards and get the following response:
Response (ABS)
0.546
1.134
2.135
1.634
●
●
Solution
1.0 ppm Mg
2.0 ppm Mg
4.0 ppm Mg
Sample
Calculate the amount of Mg in one pill.
Line of best fit y = 0.5255x+0.0455
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