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Question: analytical chemistry problem please note that the xaxis on the...

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Analytical chemistry problem. Please note that the x-axis on the graph is wrong, it is supposed to be microgram/mL NOT mg/mL. There are two corrected dilutions: 0.6590 grams into 100 mL, and 5.00 mL into 50 mL. Only an answer with all work shown will be given full points. thanks

To measure calcium in a breakfast cereal 0.6590 grams of crushed cereal were reacted for 1 hour in warm 1 M HNO3. The reaction mixture was filtered and the filtrate transferred to a 100 mL volumetric flask. A series of eight standards are prepared by transferring 5.00 mL aliquots to 50- mL volumetric flasks to which increasing volumes of standard Ca2 (containing 20.0 ug/mL) is added, diluting to the final volume with distilled deionized H2O. The samples were then analyzed by flame atomic absorption. Use the data and graph below to find the percent by mass calcium in the cereal Absorb. Ca Std Absorbance vs mg/mL Caz mL 00 0.151 0.8 1.00 0.185 y 0.0705x 0.1579 0.7 3.00 0.247 5.00 0.300 8.00 0.388 0.4 10.00 0.445 15.00 0.572 0.3 20.00 0.723 0.2 2.00 4.00 6.00 8.00 10.00 -4.00 -2.00 10,00 Concentration Ca (mg/mL)

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