Question

How do I calculate velocity using the beer's law if given the substrate is 2 mM,...

How do I calculate velocity using the beer's law if given the substrate is 2 mM, the Δabs/min is 0.68, and the reaction was monitored for a 1 min @400 nm? Can you please write this step by step for I can study from this and apply it to problems in the future. Thank you!!!

Also, pathlength is 1 cm, e is 17800/(M*cm) at 400nm.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

The Beer's Law says that , , that is , absorbance is proportional to the concentration .

Now , from complete Lambert-Beers Law of Spectrophotometry , we see

b= pathlength=1 cm

=17800 M-1cm-1

By differentiating with time in both sides , we get ,

V=velocity=

Now , we have to just put the values .

[ANSWER]

Add a comment
Know the answer?
Add Answer to:
How do I calculate velocity using the beer's law if given the substrate is 2 mM,...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Enzyme Kinetics Lab Guide Table 2: Absorbance values per minute for varied substrate concentrations Time (min)...

    Enzyme Kinetics Lab Guide Table 2: Absorbance values per minute for varied substrate concentrations Time (min) Tube A (0mM) Tube B (2.0mM) Tube C (5.0mM) Tube D (8.0mM) Tube E (12.0mM) Tube F (20.0mM) 0 0 0.012 0.066 0.066 0.076 0.191 1 0.011 0.045 0.128 0.128 0.164 0.200 2 0.017 0.096 0.190 0.190 0.219 0.241 3 0.009 0.122 0.234 0.234 0.294 0.313 Table 3. Absorbance values versus substrate concentration at a constant time (from Table 2) Concentration (mM) 0 mM...

  • Do you mind checking my work please? I feel like there's something wrong with question 2 and 3 bu...

    Do you mind checking my work please? I feel like there's something wrong with question 2 and 3 but I can't quite put my finger on it. If it is wrong, could you please explain it in detail? Also, need help filling out the table for the mass of the enzyme. Thank you for your help! 1. Math/Calculation: What is the concentration of substrate in the reaction cocktail? C 50 mM pNPP 50mM -0.05 moVL pNPP Vi-500 μ1-0.0005 L Reaction...

  • Based on the results in the table, is anion exchange a good purification step, yes or...

    Based on the results in the table, is anion exchange a good purification step, yes or no. Defend your answer. Could someone please explain how you would know if the purification worked looking at a table like this? Which values would change? Dous lloded during the way to Proteins in eine Wrn that once the non-poc b. A student is purifying an enzyme wid heyme which catályzes the Oxidation of alcohol functional groups Gising NAD as a cofactor. NADH t...

  • Based on the document below, 1. Describe the hypothesis Chaudhuri et al ids attempting to evaluate;...

    Based on the document below, 1. Describe the hypothesis Chaudhuri et al ids attempting to evaluate; in other words, what is the goal of this paper? Why is he writing it? 2. Does the data presented in the paper support the hypothesis stated in the introduction? Explain. 3.According to Chaudhuri, what is the potential role of thew alkaline phosphatase in the cleanup of industrial waste. CHAUDHURI et al: KINETIC BEHAVIOUR OF CALF INTESTINAL ALP WITH PNPP 8.5, 9, 9.5, 10,...

  • Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back...

    Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back contact is applied to the CdTe solar cell of Problem 1 using a set up similar to that described in Figure 1.74 (b) on the next page. To form the metallic back contact, two evaporation sources are used, Cu and Au. An initial 3 nm layer of Cu is deposited first and then 30 nm of Au is deposited. After these depositions, the sample...

  • just now i sent this questions. this is the answer given. however the answer i afraid...

    just now i sent this questions. this is the answer given. however the answer i afraid that he used formula that is not for constant surface temperature and noncircular formula. this is the formula foe the noncircular tube. because the question ask about triangle. my problem is, i cannot answer question 1(b) that ask the heat transfer coefficient, h. please help me. thank you. this pic is a note on constant surface temperature. page 482 ref: HEAT AND MASS TRANSFER:...

  • Need help, numbers 3-6 please show work. and fill out table of chemicals for all chemical...

    Need help, numbers 3-6 please show work. and fill out table of chemicals for all chemical used. calculate mmol in the table as well show work please and each of these must be listed in its own row. There are 10 column headings: IUPAC name OR common name, structure, CAS number (Chemical Abstract Service number) molecular mass, melting point (if applicable), boiling point (if applicable), solubility (in water, if applicable), density, amounts to be used in the experiment, and the...

  • Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing...

    Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing and understanding what is being done. I have copied and pasted some of the text from the article. Thank you! Abstract : Obesity, high-fat diets, and subsequent type 2 diabetes (T2DM) are associated with cognitive impairment. Moreover, T2DM increases the risk of Alzheimer's disease (AD) and leads to abnormal elevation of brain beta-amyloid levels, one of the hallmarks of AD. The psychoactive alkaloid caffeine...

  • 1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...

    1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow to happen within the myofiber? (5 points) 2. According to the paper, what is the major disadvantage of relying on glycolysis during high-intensity exercise? (5 points) 3. Using Figure 1 in the paper, briefly describe the different sources of ATP production at 50% versus 90% AND explain whether you believe this depiction of ATP production applies to a Type IIX myofiber in a human....

  • How can we assess whether a project is a success or a failure? This case presents...

    How can we assess whether a project is a success or a failure? This case presents two phases of a large business transformation project involving the implementation of an ERP system with the aim of creating an integrated company. The case illustrates some of the challenges associated with integration. It also presents the obstacles facing companies that undertake projects involving large information technology projects. Bombardier and Its Environment Joseph-Armand Bombardier was 15 years old when he built his first snowmobile...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT