Chemistry, 07.11.2019 20:31, hnsanders00
During this week's experiment, a student was provided with a stock solution of fd& c red 40 dye that was 0.378 mm. following the procedure in the lab manual, she created solution #2 by pipetting 5 ml of solution #1 to a 25 ml volumetric flask, then diluted to the calibration line with di water. what is the concentration of solution #2 in mm? your answer should be between ~.001 and .05after creating her standard curve for absorption versus the concentration (m) of fd& c red 40, a student found that her best fit linear line for fd& c red 40 was y = 2607x + -0.006.her kool-aid sample had an absorbance of 0.291. if 0.46 grams of kool-aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of fd& c red 40 in her 8-fl oz cup? your answer should be between ~.9% and 11%
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