The choice experiment method: Select one: a. Is an indirect, stated preference approach for valuing environmental improvements. b. Is an indirect, revealed preference approach for valuing environmental improvements. c. Is a direct, stated preference approach for valuing environmental improvements. d. Is a direct, revealed preference approach for valuing environmental improvements.
In: Economics
1. what is hydrophobic effect? please provide your answer in the context of drug-target intereactions.
2. Discuss thermodynamics of binding (i.e. discuss thermodynamic parameters that affect affinity). How do these parameters are affected by the hydrophobic effect?
3. suggest an experiment to dissect the contribution of these parameters and briefly describe it/
In: Chemistry
An organic chemistry post-lab question from a steam distillation of (+)-Limonene from orange peels using water.
A.) Could you have performed this experiment using hexane instead of water?
B.) What would end up being different and what would you have to do differently?
In: Chemistry
It has been speculated that gravity does not truly exist as a force in itself, but is instead a manifestation of the electrostatic force, which is the force responsible for the repulsion of like-charges and the attraction of opposite charges. Do you believe this is a credible theory? Why or why not. What experiment could you devise to test this theory?
In: Physics
Describe the powder X-ray diffraction experiment. List the basic components in your diagram and discuss the features/roles of each component. Include Bragg’s Law as well as coherent and incoherent scattering. What types of information can be obtained using this technique? Pros and cons with respect to single crystal XRD?
In: Chemistry
In one experiment, Marie Curie dissolved 0.09284 g of RaCl2 and treated it with excess AgNO3 to precipitate 0.08979 g of AgCl. In her time (1900), the atomic mass of Ag was known to be 107.8 and that of Cl was 35.4. From these values, find the atomic mass of Ra that Marie Curie would have calculated.
In: Chemistry
In an experiment to determine the empirical formula of magnesium oxide a student obtained the following data:
Mass of crucible and lid: 29.1234 g
Mass of crucible and lid + magnesium: 29.9345 g
Mass of crucible and lid + magnesium oxide: 30.7450 g
Obtain the empirical formula of magnesium oxide using the above data
In: Chemistry
Briefly explain why is a solid liquid extraction used prior to running a TLC analysis on an unknown compound and why ethanol is a chosen solvent. Also explain what the mobile phase for TLC is and why it is chosen. If something did not go as planned during the experiment, explain what can go wrong.
In: Chemistry
What is the role of the phosphoric acid in asprin synthesis? PROVIDE A MECHANISM which explains the role of this
chemical in this reaction.
---I know that phosphoric acid is needed because it is an acid and as an acid it acts as a catlyst in this experiment. What I do not know is how to provide a mechanism which explains the role of this checmical reaction
In: Chemistry
it has been hypothesized that the average germination time for a certain seed is 4 days. an experiment involving 32 seeds revealed an average germination time of 6 days. at the level of significance 0.05. is there evidence that average germination times has increased? (standard deviation=0.80 days). P-value method
In: Statistics and Probability