Determination of absorbance

Assignment Help Biology
Reference no: EM1389835

Question: Assume you are provided a solution of 5mM benzoic acid at pH 8. You determine the absorbance to be 2.9 ×103. You lower the pH to 3 with 100% acetic acid. After a second reading you determine the absorbance to be 1.4×103 . Explain this using structures.

Reference no: EM1389835

Questions Cloud

Expenditures for plant maintenance : which one of the following is not included as part of a company's cost in supplying private-label footwear to chain retailers? Expenditures for plant maintenance
Differential calculus to find sales volume : Use differential calculus to find both sales volume at which revenue is maximised and the maximum revenue available from sales of product X.
The formula for calculating the coverage ratio : Based on the above income statement data and the formula for calculating the coverage ratio presented on the Help screen of the Footwear Industry Report, the company's interest coverage ratio is
Standard deviation and shape of the sample mean : A population of 1000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken.
Determination of absorbance : Assume you are provided a solution of 5mM benzoic acid at pH 8. You determine the absorbance to be 2.9 ×103. You lower the pH to 3 with 100% acetic acid.
Expected frequencies and goodness of fit test : A salesperson makes four calls per day. A sample of 100 days gives the following frequencies of sales volumes.
Report and the marketing and admin report : According to the cost allocation procedures discussed on the Help screens for the Private Label Sales Report and the Marketing and Admin Report
Determine mean and variance : A commuter travels many miles to work each morning. She has timed this trip 5 times throughout the last month. The time (in minutes) required to make this trip was 44, 39, 41, 35, and 41.
Depolarization of postsynaptic neuron : Suppose that each excitatory presynaptic neuron causes a 0.5mv depolarization of postsynaptic neuron, and each inhibitory presynaptic neuron causes a 0.5mv hyperpolarization of postsynaptic neuron.

Reviews

Write a Review

Biology Questions & Answers

  Prokaryotic and eukaryotic dna replication

Prokaryotic and Eukaryotic DNA replication are same in various ways, however eukaryotic replication is much more complicated. What characteristics of eukaryotes contribute to the complexity of DNA replication

  Find number of nuclear dna molecules present in human cell

Human cells normally have forty-six chromosomes. Let us define the transition from one cell to two cells as occurring at the onset of anaphase.

  Trends in hominid evolution

Determine some trends in hominid evolution that have been discovered, but are NOT based on the fossil record?

  What is the synapomorphy of mosses and vascular plants

Horn Sporophytes are horn-shaped. Horn Possess Gemmae. Can undergo sexual reproduction. Mosses what is the synapomorphy of hornworts, mosses and vascular plants? Stomata Pores that allow the uptake of CO2 and release of O2, do not close like other st..

  What is nonassociative learning

What is nonassociative learning and what are the differences between associative and nonassociative learning. In the small stream, you choose a rock and observe many small, flattened worms crawling on it are under surface. You decide that they belong..

  Plant responses to the environmental stress of drought

Carnivorous plants are phytosynthetic yet, unlike other plants capture insects. Why did they need to evolue this unusual ability? What is plant responses to the environmental stress of drought Flooding?

  What is the function of science and technology in society

What is the function of science and technology in society. If you are in an airplane encountering turbulence and you start feeling sick to your stomach, would closing your eyes help and why.

  Explain at least one historical extinction with parallels

Explain at least one historical extinction with parallels to the extinction threats facing the bog turtle. When allosteric effector X binds to enzyme #1, enzyme stops working. However, the speed of reaction can be altered by adjusting the concentrati..

  Give the relationship between mtdna and human ageing

suggest an experiment to test. give the relationship between mtDNA and human ageing.

  What is the most abundant class of enzyme

Why can't a monomeric receptor tyrosine kinase recruit proteins to the receptor? What would happen if the GTP-ASE protein(GAP) were inhibited?what is The most abundant class of enzyme.

  The young woman with severe vaginal bleeding

What blood test would be performed before starting the transfusion. Calcium levels in blodd are dropping to dangerously low levels. The hormone PTH is released and almost immediately calcium levels begin to rise. Shortly after, PTH release slows. Is ..

  Did taste of the fresh water surprise you and how

Distribute one cup with sugar water and one with fresh water. Take a sip of the sugar water and swish it around in your mouth for several seconds without swallowing it; gradually, it has to tasteless sweet. After swallowing it (or spitting it back in..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd