After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40, a...
After 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= 2,896x + -0.004. Her Kool-Aid sample had an absorbance of 0.842. If 0.484 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?
After 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 = 2,840x + 0.005. Her Kool-Aid sample had an absorbance of 0.635. If 0.546 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?
3 pts D Question 5 After 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 = 2,774x + -0.009. Her Kool Aid sample had an absorbance of 0.848. If 0.465 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...
1. Determining the Wavelength of Maximum Absorption: 2. Determining the concentration of an Unknown Solution Volume of Stock Concentration of Soln #1 T2.001.xlon #2 5.00 2.5x loin . . x ^ 10.00 Soxom A=493.6 mm Rad y o sxlom Recorded Absorbance 0.212 0.528 0.947 1453 #4 Calibration Curve Slope of Least Squares Best Fit Line (molar abspoptivity, E) Equation for Least squares best fit line: A-42. Ubxk 2916xlor 6-01482 0.9652 Correlation Factor (R) for Least Squares Best Fit Line 3....
Red food dye (FD&C Red 40, also known as allura red AC) has the formula C18H14N2Na2O8S2. 1. What is the molar mass of FD&C Red 40? To make a solution you take 0.0097 g of FD&C Red 40. 2. How many moles of FD&C Red 40 are in your sample? You dissolve the sample of FD&C Red 40 in enough water to make 250.0 mL of solution. We call this the stock solution. 3. What is the concentration of the...