4. A sample containing ethanol and water was found to have n3° = 1.3541. Calculate the %3D exact percentage of ethanol and water in this example. Show your work. (Hint: Solve this mathematically. Assume a linear relationship between concentration and refractive index. You can make the y-intercept the refractive index of water, and use the slope formula to find the slope. The x axis (concentration) will be from 0% ethanol to 100% ethanol. From this information, you can get the equation of the line, then plug in your numbers from there.)

4. A sample containing ethanol and water was found to have n3° = 1.3541. Calculate the %3D exact percentage of ethanol and water in this example. Show your work. (Hint: Solve this mathematically. Assume a linear relationship between concentration and refractive index. You can make the y-intercept the refractive index of water, and use the slope formula to find the slope. The x axis (concentration) will be from 0% ethanol to 100% ethanol. From this information, you can get the equation of the line, then plug in your numbers from there.)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Predict all the chemical compounds in the table below from the given chemical formula and other physical properties Chemical Name Chemical Formula M (g/mol) Boiling Point Melting Point Refractive Index (power of n to D) (nD) C6H14 86.18 69 1.375 SiO2 60.1 1600-1725 C13H10 166.22 295 C13H8O 180.19 342 1.6309 C3H6O 58.08 57 1.35900
5. Determine the percent transmittance of B-carotene, C40H56 that has an absorbance of 0.5 when analyse using a UV-Visible spectrophotometer. A. 6.83% B. 31.6% C. 0.32 % D. 68.3% 6. The equation of Beer Lambert's Law is A = abc. If the 'b' is distance, 'a' is absorptivity, and 'A' is absorbance, what does the 'c' represent? A. Intensity B. Analyte concentration C. Analyte transmittance D. Frequency 7. All the following is an example of photon detectors EXCEPT: A. Vacuum phototube B. Silicon photodiodes C. Bolometers D. Photomultiplier tubes 8. C=O bond stretch occurs at 1750 cm1 and C-O stretch occurs at 1100 cm1 because: A. The C-O has a single bond which is a stronger bond, so it vibrates at a higher frequency than the C=O. B. The C-O has a single bond which is a stronger bond, so it vibrates at a lower frequency than the C=O. C. The C=O has a double bond which is a stronger bond, so it vibrates at a lower frequency than the C-O. D. The C=O has a double bond which is a stronger bond,…
Can a case 1 image be larger than the object even though its magnification is always negative? Explain.
The distance between points A and B is equal to one focal length wavelength Figure 2 2]
Kiko wants to determine the concentration of an unknown solution which produces a green solution. However, the spectrophotometer he uses doesn't have a function to determine the analytical wavelength of the solution. What is the most probable analytical wavelength he can use for the experiment? Refer to the color wheel below.
Find the concentration of benzene in hexane if the absorbance is 0.188 in a 1.000-cm cell.
5. How do you calculate the Numerical aperture of an Optic fiber? Find the numerical aperture '0' of a 1.5m plastic optical fiber, if the distance from tip to surface is 5cm and the light radius is 3.5cm?
Can you help me please? If it includes these in the question, can you solve it using significant figures and dimensional analysis?
You are required to measure a sample that absorbs at a wavelength of 300 nm and 4 µm.What would you use as your light source? Justify your answer.
In a sample of 90mL of Acetone and 130 mL of Chloroform, What is XAcetone? Please provide detailed explanation, if you can . Also, as a bonus( not required), Is there a relationship between Refractive Index of a Liquid with the mole ration of the liquid.
2) The most intense peak of the x-ray diffraction pattern obtained from a freshly laid metallic railway tracks is given in the figure below. Sketch the same peak when the analysis is performed after the railway had been actively used for a prolonged amount of time. Explain why the peak changed the way you think it did. What would happen to the same peak if the XRD analysis was performed after the sample was bent into a U-shape? Sketch and explain your reasoning Өв 20 20 20 Intensity (arbitrary units) Intensity (arbitrary units) Intensity (arbitrary units)
You use paper chromatography to separate the following two molecules. The stationary phase is coated with hexane C6H14 and the mobile phase is water. Which molecule will travel furthest up the paper? Explain using intermolecular forces between molecule and water. OH OH Phenol Napthol