(a)
Interpretation:
Molecular structures of the given organophosphorus insecticides should be determined.
Concept introduction:
Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.
(b)
Interpretation:
The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.
Concept introduction:
Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.
LD50 represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.
Lower the LD50 dose, the more toxic the pesticide.
(c)
Interpretation:
The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.
Concept introduction:
Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.
LD50 represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.
Lower the LD50 dose, the more toxic the pesticide.
Want to see the full answer?
Check out a sample textbook solutionChapter 28 Solutions
Fund. of General, Org... -Masteringchem.
- How many grams of glucose (C6H2O6 molecular mass =180daltons) would be present in one liter of a 1M (molar) solution of glucose?arrow_forwardDraw condensed structural formulas for the two carboxylic acids with the molecular formula C4H8O2arrow_forwardConvert the following structural formulas into condensed structures.arrow_forward
- Which of the following define the stereochemistry of alanine (as per the structure shown)? Note: Functional groups arranged horizontally are facing towards the front, and the functional groups arranged vertically are facing towards the back. a) d- b) S- c) R- d) I-arrow_forwardEthylene glycol, the main ingredient in antifreeze, contains 38.7% carbon, 9.7% hydrogen and 51.6 % oxygen. Calculate the empirical and molecular formulas for ethylene glycol. Given the molar mass is approximately 60 g/mol. A) Empirical formula: B)Molecular formula: Explain how you obtained the Molecular formula (b)?arrow_forwardExplain how you would prepare 100ml of 10mMProline solution given that the molecular mass of proline= 115.13 g/molarrow_forward
- When Alfred Werner was developing the field of coordination chemistry, it was argued by some that the optical activity he observed in the chiral complexes he had prepared was due to the presence of carbon atoms in themolecule. To disprove this argument, Werner synthesized a chiral complex of cobalt that had no carbon atoms in it, and he was able to resolve it into its enantiomers. Design a cobalt(III) complex that would be chiral if it could be synthesized and that contains no carbon atoms.arrow_forwardWhy is it not possible to find a five-fold symmetry operation in naturally-occurring crystals?arrow_forwardTomato juice has a OH- concentration equal to 1 X 10 -10, what is the pH of this solution?arrow_forward
- Balance the following equation, and tell how many moles of nickel will reactwith 9.81 mol of hydrochloric acid.arrow_forwardThe ionization of p-nitrophenol is shown below (pKa = 7.0): a. Identify the weak acid and conjugate base. b. At pH 7, what are the relative concentrations of ionized and un-ionized p-nitrophenol? c. If enough concentrated hydrochloric acid is added to a solution of p-nitrophenol to lower the pH from 7 to 5, what will happen to the relative concentrations of the ionized and un-ionized forms? d. Ionized p-nitrophenol has a yellow color, while the un-ionized form is colorless. The yellow color can be measured using a spectrophotometer at 400nm. In order to determine the total amount of p-nitrophenol in a solution, would you perform the spectrophotometer reading at an acidic or basic pH? Clearly explain why? e. A solution of p-nitrophenol at pH 7.95 was found to have an A400 of 0.255 . What is the total concentration (in µM) of p-nitrophenol (ionized plus un-ionized) in the solution? The molar extinction coefficient of p-nitrophenol is 18,500 M-1cm-1 and the pKa is 7.arrow_forwardConsider the intermolecular forces present in a pure sample of each of the following compounds: CH₃CH₂OH and CH₃COCH₃. Identify the intermolecular forces that these compounds have in common.arrow_forward
- BiochemistryBiochemistryISBN:9781319114671Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.Publisher:W. H. FreemanLehninger Principles of BiochemistryBiochemistryISBN:9781464126116Author:David L. Nelson, Michael M. CoxPublisher:W. H. FreemanFundamentals of Biochemistry: Life at the Molecul...BiochemistryISBN:9781118918401Author:Donald Voet, Judith G. Voet, Charlotte W. PrattPublisher:WILEY
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage LearningBiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningFundamentals of General, Organic, and Biological ...BiochemistryISBN:9780134015187Author:John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. PetersonPublisher:PEARSON