Organic Chemistry Lab

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If the solubility of cholesterol in methanol were 1 g/96 mL at 20ºC and 1 g/4.1 mL at 80ºC, what is the absolute minimum amount of methanol needed to recrystallize 5.13 g cholesterol? Report the number of mL to the nearest whole number.
In recrystallization experiments, not all of the starting material is ever recovered, even if the initial material was 100% pure. To determine the % recovery, the ratio of final to starting masses of material is taken and converted into a percentage. In an experiment, 5.7 g of impure fluorene is recrystallized in 10 ml ethanol. After filtration and drying, 5.5 g of fluorene crystals are found on the filter paper. What is the percent recovery? List the percent to the nearest whole number and do not include the % sign.
If the solubility of cholesterol in methanol were 1 g/99 mL at 20ºC and 1 g/4.2 mL at 80ºC, what is the maximum mass of cholesterol that could be recrystallized from 5.44 g cholesterol? Report the number of grams to two decimal places.
Calculate the maximum % recovery possible if the solubility at room temperature is 1g/461 mL and at the boiling temperature of the solvent is 1g/14 mL. Report your answer as a percentage to the nearest whole number, without the percent sign.
It is important to always minimize the amount of solvent used, allowing for evaporation. If we add a relatively large excess, we expect our recrystallization to produce lower percent recoveries. A common mistake is to misplace the decimal, resulting in addition of 11x the solvent instead of the recommended 1.1x. If a substance dissolves in a solvent at 1g/459 mL at room temperature and at 1g/13 mL at the solvent’s boiling point, what would be the maximum expected amount recovered if using 11x the minimum amount of solvent in recrystallizing 10 g of the substance? Report your answer in grams to one decimal place.

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PRI and Mexican immigration.

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respond these two questions in no more than 100 words each. (I need answers separated for each question)

What explains the rise, demise, and return to power of the PRI? Does it now pose a threat to Mexican democracy?
What should be done about illegal immigration from Mexico into the United States? What kind of policy reform would you support?

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Torts in American law.

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W​‌‍‍‍‌‍‍‌‍‌‌‍‍‍‌‍‌‌‌‍​rite a paper discussing torts in American law. Include the four types of wrongfulness and provide examples of each. What are the elements that must be proven in a negligence case? How would duties differ in cases where the injured party is an invitee, licensee, or a trespasser? What is the difference between contributory and comparative negligence? Can a tort also be a crime? What is proximate cause in a tort case? Assignment Checklist: ? Discuss the four types of tort wrongfulness with examples ? Identify the elements of a tort. ? Discuss proximate cause in a tort. ? Distinguish between product liability and strict liability ? Explain how contributory or comparative negligence would affect a tort lawsuit. ? Explain the differences in duties differ regarding invitees, licensees, and trespassers. ? Can a tort also be a crime? Formatting: ? Respond to the questions in this assignment providing support or evidenc​‌‍‍‍‌‍‍‌‍‌‌‍‍‍‌‍‌‌‌‍​e for your point of view or argument you are trying to make. ? Tell your readers what action they should take or provide a summary of what the reader should take away from reading/learning about the topic. ?

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Feeding Disorders Case

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Write a summary statement about the case presentation, including potential DSM-5 diagnoses.
Is there a screening tool for this diagnosis? Would it be appropriate for this patient? If available online, include a link to the tool.
What assessment questions would you ask them to identify their eating disorders, triggers, and current coping skills?
What medication changes would you recommend, including doses and administration times? What precautions and interactions would you educate the patient about when prescribing your recommended medications or changes in medication?
Explain any other health professional referrals that would be significant in your patient’s treatment plan.

Mike Hill is a 23-year-old male who sees you today with a history of fluctuating and significant weight loss. Today’s weight indicates a 30-pound loss since his last doctor visit two months ago. According to his chart, his PCP diagnosed him with General Anxiety Disorder and noted “specific phobia of choking.” Mike has no other relevant past medical history or concurrent medical conditions or disorders. His diet doesn’t have any culturally associated practices, and food is available for consumption. Mike has no history of an eating disorder or trauma.

Sleep is restful with Trazodone 25 mg po q hs and melatonin 3 mg po q hs. He tried Zoloft in high school and college but reported negative side effects of low libido and tiredness; he stopped taking it at age 19.

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