What is the concentration in parts per million of DDT in the tissues of a seabird that contains 50. mg of DDT in 1,900 g of tissue? DDT, a nonbiodegradable pesticide that is a persistent environmental pollutant, has been banned from use in the United States since 1973

Q: Explain the following terms with a suitable example for each:(i) Disinfectants(ii) Antacids(iii)…

A: i) Disinfectants are those chemical agents which are designed to inactivate the microorganisms on…

Q: explain how they emulsify nonpolar substancesin water

A: Emulsifier is an amphipathic compound, which attract both polar and nonpolar compounds. These…

Q: What are the active ingredients of Ariel detergent and it's hazardous components?

A: The main washing ingredient in powder detergent is the Anionic surface-active agent (surfactant).

Q: What are vitamins and when is a vitamin fat soluble or water soluble?

A: Biomolecules are the chemical compound which are present in body of living beings. These…

Q: The concentration of titanium in the South Pacific Ocean, near the island nation of Fiji, has been…

A: ppt :  Full form of ppt is parts per trillion (1012). It can be assigned by the formula :

Q: 10. Chemical substance commonly used as a flavor enhancer: A. Monosodium glutamate (MSG) C.…

A: Given evolume of food through the presence of carbon dioxide

Q: Identify 2 cosmetic ingredients (either in cosmetic or toiletry products) that are classified under…

A: We have to find 2 cosmetic ingredients comes under the categories of Skin sensitizer. Skin irritant,…

Q: Discuss the role of solubility of a drug when formulating an oral solution for Paediatric…

A:

Q: Be sure to answer all parts. What is the concentration in parts per million of DDT in each of the…

A: Parts per million is a concentration unit . It is the number of parts in 106 parts of the solution.…

Q: Draw the chemical structure of soap and a detergent. Identify the polar and non-polar components of…

A: Soap - These are the sodium and potassium salts of long-chain fatty acids Detergents - These are the…

Q: Identify which among the two drugs is more water soluble and why? QH HO CH3 CH3 ČH3 ČH3 DRUG #1 DRUG…

A: Water solubility for these two drugs is explained as:

Q: 1. What is the purpose of the concentrated sulfuric acid in the preparation of aspirin?

A: A common medication for reducing fevers, minor aches, and pains is aspirin. As a blood thinner or…

Q: What is the molarity of an ethylacetate solution that contains 2.54 moles C4H8O2 dissolved in 600.0…

A: The answer is given as follows

Q: What is the concentration of zinc in the plant in ppm? In ppb?

A: ppm ( parts per million ) and ppb( parts per billion )are the methods used to express the…

Q: gummy bear has a mass of about 2.3g and a volume of about 1ml. About 12% of the mass of the gummy…

A: Given-> Weight of gummy bear = 2.3 gm Volume = 1 ml = 0.001 L (1L = 1000 ml) Weight of sugar =…

Q: Which of the following is a suspension? salt water Soda pop (e.g. Sprite, Coke, or Pepsi) Gasoline…

A: Suspension :- When a solute is insoluble in a solvent then it forms a heterogeneous mixture . The…

Q: the concentration of B in mg/L? 2.16 x 10-3 mg/L -3 4.62 x 10 mg/L 5.02 x 10-2 mg/L 2.61 x 10-3 mg/L…

A: Concentration of B = 2.61 x 10-3 mg/L Concentration of A = 4.62 x 10-3 mg/L

Q: What is the concentration in parts per million of DDT in each of the following? a. 0.042 mg in 1,400…

A: Concentration in parts per million (ppm) can be determined by using the formula given below as;…

Q: State reasons for the following occurrences: (i) Soaps do not do the cleansing in hard water. (ii)…

A: Soaps are the water soluble sodium or potassium salts of higher fatty acids like palmitic acid,…

Q: (c) Most toothpastes are fluorinated and kitchen salt is iodinated. State the importance of (i)…

A: Fluorinating tooth paste :   Fluoride is commonly used in dentistry to strengthen enamel, which is…

Q: 57. A hospital medication order calls for the administration of 100 g of mannitol to a patient as an…

A: 100 g of mannitol is to be given over a 24-hour period. Thus, mass of mannitol to be given per hour:…

Q: Molecule A OH Molecule B HO.

A: 3. The given molecule A is propan-2-ol and molecule B is propan-1-ol. Propan-1-ol is a linear…

Q: Explain why cholesterol, a compound with molecular formula C 27H 46O and one OH group, is soluble in…

A: Cholesterol is soluble in  CCl4  but insoluble in water.

Q: 1. What is drug addiction? 2. What is inhalants?

A: A question based on general chemistry, which is to be accomplished.

Q: Fish kills regularly take place on hot summer days. Fish kills occur in summer due to __ a.…

A: We have to tell the reason for fish kills to occur on summer days. The given options are  a.…

Q: Explain the following terms giving one example of each type: (i) Tranquilizers (ii) Synthetic…

A: (i) Tranquilizer: Transquilizer is a drug which is used for the treatment of anxiety, fear,…

Q: Identify which among the two drugs is more water soluble and why?

A: 1) Drug 2 is more soluble because it has OH group which leads to hydrogen bonding and hence more…

Q: State the chemical properties on which the following uses of baking soda are based:(i) as an…

A: Sodium bicarbonate (NaHCO3) is termed as the baking soda and it is made up of sodium (Na+) and…

Q: 6. Name four processes that may be used to refine oils 7. What is the description for the term…

A: 6. Answer: Refining of oil involves the conversion of crude oil into useful products as gasoline,…

Q: If propylene glycol is found to be contaminated with 1.2 ppm of solid foreign substance, what is the…

A: The mass of solute in mg present in a one-liter solution is known as ppm (parts per million)…

Q: 203,450,000g of water in a lake is contaminated with 326g of anthrax. How many ppm? A. 1.60 ppm B.…

A: PPM is Parts Per Million. 1 PPM is defined as the concentration of the solution, containing 1g of…

Q: The concentration of 0.00400 M Al(OH)3 solution in terms of ppm is: Select one: 5.20 ppm 0.308 ppm…

A: Given concentration of Al(OH)3 = 0.00400 M  we know that molar mass of Al(OH)3 = 78 g/mole ppm is…

Q: Explain how soap removes oil from your hands, when you wash them with water. Provide details about…

A: Soap molecules are composed of long chains of hydrogen and carbon atom . Soap can easily remove…

Q: Appendix A - Commercially available analgesics. No: Commercial Aspirin Caffeine Acetaminophen Ibu…

A: No 5 is mentioned above is caffeine. It gives spot of caffine And Rf value is 0.08.

Q: Which two elements are largely responsible for fresh water eutrophication?

A: The eutrophication is a process in which there is a growth of plant life like algae due to the…

Q: What are the basic components of a cleansing system (surfactant-based as a shampoo or foaming…

A: The effective foaming ability of these surfactants makes the better foam. These foams can change the…

Q: Atropine and cocaine are used in the diagnosis of diseases.

A: Above question can be answered as follows

Q: When a person has a blood alcohol content (BAC) of 0.10% (v/v) they are likely to exhibit impaired…

A:

Q: What happens to pCO2 levels as the disease (Idiopathic pulmonary fibrosis)  progresses, and what…

A: 1). The bicarbonate buffer system involves an acid and base homeostatic mechanism further involving…

Q: How many mg of active ingredient present in a 30g tube of a 0.05%w/w fluticasone ointment? are

A: Given :-  %w/w = 0.05%  Mass of tube = 30 g  To calculate :-  Mass of active ingredient (in mg)

Q: What kinds of surfactants are used in today’s laundry-cleaning formulations?

A: Surfactants are surface active agents. They decrease the interfacial tension  or surface tension…

Q: give clear handwritten solution) give %w/v for a solution made from 2.147g  vitamin c dissolved in…

A:

Q: List the intermolecular attractions that occur betweena water molecule and a glycerol molecule.

A: Water and glycerol, CH2(OH)CH(OH)CH2OH, are miscible in all proportions.

Q: Draw the chemical structure of a soap and a detergent. Identify the polar and nonpolar components of…

A:

Q: compare the quality of margarine and mayonnaise when it is made up of coconut oil

A: Answer - margarine - Margarine usually tops butter when it comes to heart health. Margarine is made…

Q: Be sure to answer all parts.   What is the concentration in parts per million of DDT in each of the…

A: Given : 0.032 mg in 1200 g plankton 2.7 mg in 1.0 kg needlefish tissue To find: concentration in…

Q: Describe the following substances with one suitable example of each type: (i) Non-ionic detergents…

A: Given substances: Non-ionic detergents Disinfectants To find: The description about the given…

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.