workbook-20231217054840861337-Elements-and-Compounds-Practice-f

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You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.

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Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when taken in very large doses. A measure of toxicity is the LD50 value (Lethal Dose, 50%). It is the quantity of material, expressed in mg of material per kg of subject-body-weight that, if administered to a population of subjects, would cause 50% of the population to die. The LD50 value for FD&C Red Dye No. 40 is >10,000 mg/kg in rats. Assume that the LD50 value for humans is the same as for rats. Calculate the number of mg of Allura Red present in an 9 fluid ounce glass of the beverage you used in this lab and use this calculation to determine the number of such glasses of Allura Red sports drink required to reach the LD50 of 10,000 mg of Allura Red/kg body weight. Assume that the concentration of Allura Red in the beverage is 0.000038 M and the person has a body weight of 175 lbs. The molar mass of Allura Red is 496.42 grams/mol 1 fl oz = 29.5735 mL 2.205 lbs = 1 kg You may assume…

Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when taken in very large doses. A measure of toxicity is the LD50 value (Lethal Dose, 50%). It is the quantity of material, expressed in mg of material per kg of subject-body-weight that, if administered to a population of subjects, would cause 50% of the population to die. The LD50 value for FD&C Red Dye No. 40 is >10,000 mg/kg in rats. Assume that the LD50 value for humans is the same as for rats. Calculate the number of mg of Allura Red present in an 9 fluid ounce glass of the beverage you used in this lab and use this calculation to determine the number of such glasses of Allura Red sports drink required to reach the LD50 of 10,000 mg of Allura Red/kg body weight. Assume that the concentration of Allura Red in the beverage is 0.000038 M and the person has a body weight of 175 lbs. The molar mass of Allura Red is 496.42 grams/mol 1 fl oz = 29.5735 mL 2.205 lbs = 1 kg You may assume…

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

Murray McKinz ← → C ✰ openvellum.ecollege.com/course.html?courseld=17588559&OpenVellumHMAC=ab1d8844bb4e9e48eff60bc535d90c0c#10001 Mastering Chemistry My Courses Course Home Syllabus Scores eText Document Sharing User Settings X M8 Ways to Mak X Course Tools ● 50°F Sunny In-Text Citation X Course Home

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

Hello, I need help with my chemistry hw. I have been trying to solve this for hours, thank you.

Please answer FULLY. You are provided all info needed! We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

Please answer FULLY. You are provided all info needed! We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

We want to inform you that your performance as a tutor is being evaluated and will be reported to the administration. Additionally, there will be an online ranking system that not only assesses the overall performance of Bartleby as a website but also ranks individual tutors based on their question-and-answer accurate contributions. This ranking will be shared with management. Please ensure that your responses are of the highest quality, as multiple requests may be directed to the same person for assessment.

← Murray McKinz X M 8 Ways to Mak X с ✰ openvellum.ecollege.com/course.html?courseld=17588559&OpenVellumHMAC=ab1d8844bb4e9e48eff60bc535d90c0c#10001 Mastering Chemistry Course Home My Courses Course Home Syllabus Scores eText Document Sharing User Settings Course Tools ● 50°F Sunny In-Text Citation X Canvas at ECU X Chem 1120: Intro to Gen Chem for the Allied Health Sciences.

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An environmental chemist working for the Environmental Protection Agency (EPA) was directed to collect razor clams from a heavily-contaminated river superfund site and analyze them for their Cd?+ content using graphite furnace atomic absorption spectrometry (GFAAS). The chemist dried the clams at 95 °C overnight and ground them in a scientific blender, resulting in approximately 50 g of homogenized dry weight. A representative 98.75 mg sample was taken from the approximately 50 g of dry material and dissolved in 100.0 mL of 0.1 M HCI to create a sample solution. Using the method of standard additions, the chemist prepared five standard solutions in 100.0 mL volumetric flasks, each containing 5.00 mL aliquots of the sample solution. Varying amounts of a 75.0 ppb (ug/L) Cd? + standard were added to each of the flasks, which were then brought to volume with 0.1 M HCI. The Cd? + content of the solutions was then analyzed using GFAAS, resulting in the. absorbance data given in the table.…

professor Scimemi has accepted you as a Master’s student and you are involved in a project that studies the cellular basis of neuropsychiatric diseases. For your electrophysiology recordings you have to make a recording solution containing (in mM): 119 NaCl, 2.5 KCl, 2.5 CaCl2, 1 MgCl2, 26.2 NaHCO3, 1 NaH2PO4, 22 glucose. You need 800 ml of it. How much KCl do you need to weigh out? Hint: we only care about KCl here. (MW KCl is 74.55 g/mol