Reference no: EM13134429
Congeners and their Properties
Please answer and explain where appropriate
The brominated flame retardants consist of 209 congeners with different physical-chemical properties and therefore behave differently in the environment.
Congener/ Water Solublity (mol/L)/Log KOA/Log KOW/Human BMF
4, 4'-dibromo / 6.57 x 10-7 / 8.64 / 5.86 / -
2,2',4,4'-tetrabromo / 3.04 x 10-8 / 9.80 / 6.78 / 98
2,2',4,4',5-pentabromo / 7.74 x 10-9 / 11.2 / 7.39 / 98
2,2',4,4',5,5'-hexaabromo / 7.82 x 10-11/12.15 / 8.05/ -
2,2',4,4',5,5',6,6'- decabromo / - / 13.1 / 9.9 / 8
(a) How many congeners exist in the monobromo homolog group? Draw their structures.
(b) Calculate the molecular weights of the 5 congeners listed above.
(c) What do the trends of log KOA, log KOW, and the negative log of water solubility vs. molecular weight indicate about the relationship between molecular weight and:
-solubility and mobility in water?
-potential for long range transport in air?
-hydrophobicity?
(d) Why is BMF higher for tetra and penta homologs than for deca homolog?
|
Would you be still be willing to invest in the company
: Should personal preference play any part in investment decisions? For example, if you don't care for Pepsi (the drink), would you be still be willing to invest in the company?
|
|
Explain how many constitutionally isomeric alcohols
: How many constitutionally isomeric alcohols are there with a formula of C4 H10 O?
|
|
Derive the intertemporal euler equation
: Derive the intertemporal Euler equation and what is the optimal level of C1 given the endowments, R, and ? What?s theoptimal level of C2?
|
|
A description of the trend and its history
: Develop a Microsoft® PowerPoint® presentation about this trend that includes the following: A description of the trend Its history
|
|
Compute the molecular weights
: Calculate the molecular weights of the 5 congeners listed above. What do the trends of log KOA, log KOW, and the negative log of water solubility vs. molecular weight indicate about the relationship between molecular weight and
|
|
Determine probability to make purchase at shoe store
: Cash back when they make a purchase at a shoe store. or C. an entry into a sweepstakes when they make a purchase. I need to determine the probability of each option.
|
|
Explain the users of financial statements
: explain he 4 financial statements (descriptions, contents, forms of presentation).
|
|
Compute overhead costs as a percent of dirct labor
: Brimful Corp incurred the following manufacturing costs this period: dirct labor, $912000; direct materials, $782000; and factry overhead, $219000. Compute overhead costs as a percent of (1) dirct labor and (2) dirct materials.
|
|
Explain impact on the statistics
: Accidentally typed in error as a 415, what would be the impact on the following statistics? Answer with increase, decrease, or remain the same.
|