Question: A solution was prepared using 0.0010 g of an unknown steroid (of molecular weight around 255) in 100 mL of ethanol. Some of this solution

A solution was prepared using 0.0010 g of an unknown steroid (of molecular weight around 255) in 100 mL of ethanol. Some of this solution was placed in a 1-cm cell, and the UV spectrum was measured. This solution was found to have λmax = 235 nm, with A = 0.74.
(a) Compute the value of the molar absorptivity at 235 nm.
(b) Which of the following compounds might give this spectrum?

Step by Step Solution

★★★★★

3.35 Rating (164 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a b This large value of could only come from a conjugated system eliminating t... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

893-C-O-O-C (1560).docx

120 KBs Word File

Students Have Also Explored These Related Organic Chemistry Questions!

A solution was prepared by dissolving 0.834 g of sulfur, S8, in 100.0 g of acetic acid, HC2H3O2. Calculate the freezing point and boiling point of the solution.

A solution was prepared from 10.0 mL of 0.100 M cacodylic acid and 10.0 mL of 0.0800 M NaOH. To this mixture was added 1.00 mL of 1.27 10-6 M morphine. Calling morphine B, calculate the fraction of...

A solution was prepared from 1.023 g of the primary standard tris (Table 10 - 4) plus 99.367 g of water; 4.963 g of the solution were titrated with 5.262 g of aqueous HNO3 to reach the methyl red end...

Experiment 2: Recrystallization of an Unknown-Macroscale Purpose The purpose of this experiment is to learn how to purify a larger sample of a crystalline compound through recrystallization. You will...

"Cultivation of a filamentous fungus in shake flasks and laboratory airlift bioreactor" Your report contains two main parts: "Materials and methods" and "Results and discussion" In Materials and...

ID Grip Strength (X) (X-Mean)2 98.5 3.4596 Histogram of Grip Strength in male EXSC 415 students $5.5 1.2996 10 95.0 2.6896 98.0 1.8496 126.5 891.6196 90.0 44.0896 114.0 301.3696 108.0 129.0496 124.0...

Please solve this for me and show every step Question 3 [30] 3.1. An organic acid was found to contain only C, H and O. When a 350.0 mg sample of the organic acid was completely combusted in air,...

Experiment 3: Williamson Ether Synthesis Introduction Ethers can be produced from two alcohols. However, unless you want to have symmetrical ethers (i.e., diethyl ether derived from ethanol), ether...

Ammonia can be determined spectrophotometrically by reaction with phenol in the presence of hypochlorite (OCl - ): 4.37-mg sample of protein was chemically digested to convert its nitrogen into...

Find attached Ingredients: Water, MCC, Salt, Nicotine, pH regulator, sweeteners and flavours I am wondering why the decision to go with LYFT. I understand migrating to LYFT would be easier from sells...

When the price of Good A is $150, the quantity demanded of Good A is 1500 units. When the price of Good A rises to $270, the quantity demanded of Good A falls to 900 units. Using the midpoint method,...

The table below contains data on the monthly amount, in millions of dollars, which was spent by "leading national advertisers" for advertising apparel and accessories in magazines, in four recent...

hich of the following would be considered a fraud scheme to understate financial performance

A consumer earns income of $90,000 and $100,000 in periods 1 and 2, respectively. If the interest rate is 10 percent, draw the intertemporal budget constraint. Assume period 2s income rises to...

Draw the products you would obtain by reaction of ?-D-ribofuranose with: (b) (CH3CO),0, pyridine (a) CH31, Ag20 H OH B-D-Ribofuranose

Reduction of D-glucose leads to an optically active alditol (D-glucitol), whereas reduction of D-galactose leads to an optically inactive alditol. Explain.

What is the result if the amount of net income for the year is less than the amount of dividends paid? A The amount of the cash account increases B The retained earnings account decreases C The...

14. A paper in the May 2002 issue of The Journal of Pediatrics presented the results of research on various characteristics in children of diabetic mothers. The studies have shown that maternal...

Problem 9-17 Constant growth Your broker offers to sell you some shares of Bahnsen & Co. common stock that paid a dividend of $3.75 yesterday. Bahnsen's dividend is expected to grow at 5% per year...