12. Following the curved arrows, draw the product(s) for each of the following reaction steps (3 points each, 9 points total). a) + H₂O

Table 1.0 of data showing calibration standards prepared by dilution and the absorbance Concentration CuSO4 (M) Volume of 0.5M (ml) Volume of D/Water (ml) Absorbance 0.00 0.10 0.20 0.30 0.40 0.50 II. 0.00 1.00 2.00 3.00 4.00 5.00 5.00 4.00 3.00 2.00 1.00 0.00 1. Construct a graph of concentration against absorbance, clearly show a best fit line. Find regression of your graph. Show how 0.000 0.406 0.638 0.854 1.202 1.276

A) Using the Data Graph below (with the equation for the best fit line), Camculate the concentration of a solution with an absorbance of 0.385.  B) Write the KC Expression for the Lab's Reaction.

8. Chemical Formula: C9H₁7NOS 8 1H, broad 7 6 Final Answer 1H, broad 5 بللي بلد 4 PPM 3H s 3 2 9H s 1 there are 3 peaks between 4.00 and 4.30 ppm: a 1H t at 4.3 ppm two 1H t that both happen to be at 4.0 ppm, but are not the same 0

Based on the TLC results label spots 1,2,3 with aspirin, acetaminophen, and caffein. Make sure to give the Rf value for each.

The concentration of methylene blue in the sample is estimated through (select the correct)   options:   refractive index measurement (refractometry).   turbidity measurement (turbidimetry).   absorbance measurement (spectrophotometry).   titration with 2% HCl solution.

(17360 Systane Part B CH3 CH3 CH3-CH₂-CH-CH-CH₂-OH Spell out the full name of the compound. Submit Request Answer Part C OH CH₂-CH3 P dy 44#1 BAKER -2221 51-19-145 ciation, Inc. OS WINE 19 25 OCT 2022 PM) Address Herbert Epstein 14773 Cumberland C DELRAY BEACH, F အင်းတင်း 46-135654 2 ^ [

Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic steps. Be sure to account for all bond-breaking and bond-making steps. H. HH HH OHH HH H Na Ⓒ Select to Add Arrows CH3CH₂ONA, CH3CH₂OH CH3CH₂ONA, CH-CH-OH 10: Select to Add Arrows CH3CH₂ONA , CH3CH₂OH 30% dl

Graph ? ?  the table and find X1 valeu.

How do you determine concentration of an unknown using standard addition method? For example, if you have five solutions with varying amounts of the unknown, 0 mL, 10 mL, 20 mL, 30 mL, and 40 mL, per 100 mL of 0.05 M solution and absorbance values for each, how would you use this to find concentration of the unknown. Would the unknown concentration be the slope of the standard addition model graph, or do you have to determine concentration of all five solutions and use these concentrations and the absorbance values to create an absrobance vs concentration graph? If so, would the slope of that graph be the concentration of the unknown.