A film badge worn by a radiologist indicates that she has received an absorbed dose of 2.3e-5 Gy. The mass of the radiologist is 67 kg. How much energy has she absorbed? Answer in mJ.
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Your absorbed dose is expressed in Gy (Gray) which means radiation absorbed per unit kg of mass is 1 ...
Question1.
The data below was obtained in an experiment to determine the protein concentration of two unknown solutions. Analyse the data, plot a suitable graph and determine the protein concentrations of the unknowns
Protein standard (mg cm-3) Absorbance at 540nm
0
I have tried to play with all the numbers in this question, but nothing seems to be working.
Nitrite ion, NO-2 is used as a preservative for bacon and other foods. It has been the center of controversy since it is potentially carcinogenic.
Here is an abbreviated procedure for the determination:
Step 1: 50.0 mL of unk
1.A portable photometer with a linear response to radiation registered 73.6 μA with a blank solution in the light path. Replacement of the blank with an absorbing solution yielded a response of 24.9 μA. Calculate:
a) The percent transmittance of the sample solution.
b) The absorbance of the sample solution.
The data in the table below were obtained during a colorimetric determination of glucose in blood serum.
Glucose Absorbance,
concentration, NM A
0.0 0.002
2.0 0.150
So here's the deal, I have an exam tomorrow and one of the topics is enzyme kinetics. I need to know how to derive a Lineweaver Burk plot using an absorbance over time graph for both a control and in the presence of an inhibitor.
So, in the practice lab, I have five concentrations for the control: 6.25uM, 12.5uM, 25uM, 50uM,
This article describes the difference between interpolation and extrapolation in the context of the Bradford protein assay, and why you cannot extrapolate the concentration.
Exercise:
A sample of 1.500g of gold was analyzed to determine mercury in the same one. It was come by the method of standard addition preparing solution a standard Hg mercury (II) putting under it conditions similar to the one of the sample:
Standard solution: An amount of 50 mg of pure mercury becomes to Hg (II) and is ad
What is the difference between an absorption spectrum, excitation spectrum, and emissions spectrum?
I deduce the identity of two fluorescent protein (label FP3 and FP6) based on absorption spectrum.
The results of the absorption spectra were plotted in two ways: Y-axis as true absorbance or Y-axis as normalized absorbance
