Okay so the five volumetric flasks came from solutions that the professor told us to get the wavelength for the highest point of absorbance for asked how I got the highest point of absorbance earlier
and the 0.077 was set to that because that was the lowest number I could get on spectrometer... that's why in the discussion part it said that is why there might be some error.
OK on the 0.077. That is a very good reason why the answer may have been a little low but I still would say that some of the iron may have been lost in the transfer from the crucible. For the five volumetric solutions, I assume the prof gave you the solutions to use. I would stick one statement in somewhere, you pick the place, something like this. Several dilutions were provided and the spectrum was scanned from ??nm to ??nm in order to identify the maximum absorbance. It was determined that the maximum absorbance was at ??nm. (I saw you had that (310 nm or something like tht) but I have forgotten exactly where it was placed. That spot may be the appropriate spot to place this statement.
It is still placed into the methods part
To determine the wavelength at the highest point of absorbance in a solution, you would typically perform a spectrophotometric analysis using a spectrophotometer. Here's how you can go about it:
1. Prepare the solutions: Obtain the five solutions provided by your professor and transfer each of them into separate volumetric flasks. Make sure each solution is properly labeled.
2. Set up the spectrophotometer: Turn on the spectrophotometer and allow it to warm up, following the manufacturer's instructions. Once it is ready, adjust the wavelength range to cover the desired spectrum for your analysis (e.g., 200-700 nm).
3. Blank the spectrophotometer: Fill a cuvette with a blank solution, which is typically the solvent used to prepare the solutions provided by your professor. Place this cuvette into the spectrophotometer, close the lid, and set the spectrophotometer to 100% transmittance or zero absorbance at the desired wavelength. This step ensures any background absorption is accounted for.
4. Measure absorbance: Take one of the volumetric flasks containing the solution you want to analyze and transfer a small sample of it to a clean, empty cuvette. Ensure there are no air bubbles in the cuvette, and then place it in the spectrophotometer.
5. Record absorbance values: Use the spectrophotometer to measure the absorbance of the solution at a specific wavelength. Start with a wavelength below the expected absorbance peak and gradually increase it until you find the highest point of absorbance. Record the absorbance value at this wavelength for each of the five solutions.
6. Repeat for other solutions: Repeat steps 4 and 5 for the remaining four solutions, transferring a small sample of each solution to separate clean cuvettes and measuring their absorbance at the same range of wavelengths.
7. Analyze the results: Once you have measured the absorbance at the highest point for each solution, you can compare the wavelengths to determine if there are any patterns or trends among the solutions. Additionally, consider any other factors that may influence absorbance, such as the concentration or composition of the solutions.
By following these steps, you can determine the wavelength at the highest point of absorbance for the provided solutions and fulfill the requirement set by your professor.