Description (3)For our purpose, assume that you are detecting Na3PO4 in water. Please write the dissociationreaction of Na3PO4 in water. What type of acid/base system is this: (a)strong/weak, (b)acid or base, (c)monoprotic/polyprotic? If polyprotic, how many protons? (4)Assume you transfer 50 mL of that sample and you will titrate it with 2 mmol/L standardized solutionof strong acid/base. Please propose what acid or what base you will use as titrant for this titration.Explain your decision. (5)Calculate the Equivalence volume (or volumes) and the pH at the (final) equivalence point. (6)Calculate the pH after you added 4 mL of titrant to your sample. (7)For this titration you will need an indicator. Please look at this list and choose the indicator to detectthe (final) equivalence point. Explain your choice. (7)Phosphates are used in your body to keep the pH constant at 7.4. What are the principal species ofphosphates that exist at this pH? What is the concentration of these species at pH 7.4? [hint: you willneed to use the total concentration of phosphates that you measured with random number generator] (8)Human blood contains about 9 g/L of sodium chloride. Calculate the activity of phosphate in yoursample. (9)The healthy level of phosphate in blood is between 0.87 and 1.45 mmol/L and is related to thecalcium level. To measure the level of phosphate you need to bind the calcium before you start thetitration. The normal level of “free” calcium in blood is 4.4-5.2 mg/dL. Calculate how much EDTA youshould use to bind all the calcium before your phosphate titration. [Hint: your sample is still 50 mL]
Description Part 1: View the video "Ghost in the Genes" by using the following link: Ghost in the Genes. Write an essay which answers the questions listed below. What is epigenetics? What is the relationship between DNA and epigenetics? Why is epigenetics important? Have you heard of epigenetics before watching this video? What is your personal reaction to the video? This assignment must meet the following criteria: Minimum word count: 400 words APA format Work Cited page Part 2: Provide Feedback to me if this assisted in giving you a better understanding of Epigenetics and what could be done differently (3 paragraph maximum).
Description Hi! Need help with equilibrium lab. All of the information is provided in the attachment, need help with filling in the tables/charts. Thanks in advance
Description In the Content section under 152 Lab Assignments 5 & 6 you will find the Lab Assignment 6 document (Word file) along with a Guide for Lab Assignments 5&6 (pdf). Once again, careful reading of the Guide before attempting the Lab Assignment is strongly recommended. EXCEL is required to complete the assignment.
Description Here are 7 questions related to organic chemistry. 1. Curved arrows always point from electron pair _______(a) to electron pair ______ (b). 2. Explain what the “S”, “N”, and “2” mean in an SN2 reaction. 3. True/False (briefly explain): The product of an a SN2 reaction with an alkyl halide in a R configuration will always produce a product with an S configuration. 4. Explain how sterics plan a role in the rates of SN2 reactions. 5. Explain what the “S”, “N”, and “1” mean in an SN1 reaction. 6. True/False (briefly explain): The product of an a SN1 reaction with an alkyl halide in a R configuration will always produce a product with an S configuration. 7. Which kind of carbons favor SN1 and SN2 reactions (primary, secondary, or tertiary)? Briefly explain.
