2. The empirical formula for the Brilliant Blue dye is CayHyN,O,S,Na, and the fo
ID: 713351 • Letter: 2
Question
2. The empirical formula for the Brilliant Blue dye is CayHyN,O,S,Na, and the formula weight is 792.86 g/mol. How would you prepare a 525 × 10 M solution of Brilliant Blue dye? How many grams of the dye you need to add to a 1.00 L of water to make this solution? Many dyes used in food products are classified as hazardous chemicals in their pure form. Why can they be safely used in those food products? 3. , then, We used 630 nm wavelength to carry out the absorbance measurements. What is the color of light that the powdered drink solution primarily absorbs? 4.Explanation / Answer
2) molarity of dye to be prepared=5.25*10^-6M=5.25*10^-6 mol/L
5.25*10^-6 mol of dye is to be added to 1 L of water
mass of dye to be added=mol*formula mass=(5.25*10^-6 mol)*(792.86 g/mol)=0.004162 grams
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