State a reason of the following statements: (i) Soap do not work in hard water. (ii) The use of the sweetener aspartame is limited to cold foods and drinks.

Q: What B the true percentage of water in Backa 2H2O?

A: the molecular formula of the compound is = BaCl2 . 2H2O The percentage of water is the compound is…

Q: 1.) Proteins, nucleic acids, and carbohydrates are grouped by common structural features found…

A: 1) The amino acid residues are linked together by peptide bonds and polymerize to form a peptide…

Q: Q1: What are the roles of covalent bonds and weak bonds in physiology? Which type of chemical bond…

A: Covalent bond is formed by share of electrons .It can be polar and non polar.covalents bonds are…

Q: A solution of 1.8274g of a polypeptide in 274mL of a aqueous solution has an osmetic pressure at…

A: Osmotic pressure  defined  as the minimum  pressure that  must be  applied  to solution  to stop…

Q: Before giving you an injection, a physician swabs your arm with isopropyl alcohol at room…

A: The boiling pint of isopropyl alcohol is 82.4 degree Celsius and the temperature of human body is…

Q: 39. Which of the following compounds is expected to be H20 soluble? IV А) I B) II С) I D) IV 40.…

A:

Q: How would that affect aquatic life in cold-climate lakes?

A: Temperature is one of the important factor that influences the water chemistry.

Q: 1. Rank the following in terms of increasing boiling point: C2H5OH CaBr2 C4H10

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: The latent heat of vaporization of water at 100 oC is 539 kcal/kg. Calculate the boiling point of…

A: The boiling point of water can be determined by the Clausius-Calyperon equation. It can be given as:…

Q: Mixtures of liquids whose boiling points are similar (separated by less than 70 °C) require…

A: Given that : We have to identify the distillation method used to separate the mixture of liquids…

Q: How does the sea salt I see in the health-food stores differ from regular table salt?

A: Salt is a mineral consisting predominantly of sodium chloride (NaCl), a chemical element belonging…

Q: Which of the following DOES NOT define a gel?   a. it is in a semi-solid state   b. it entraps…

A: Gel Semi-solid colloid in a more solid form than a sol broadly .    a.  it is in a semi-solid state…

Q: What is are the two key structural parts, one hydrophobic and the other hydrophilic, of a soap…

A:

Q: In the Figure below, the amount of the three liquids acetic acid, butanol and water at pointP is:…

A: The three phases are solid, liquid and gaseous. For a three component system a phase diagram can be…

Q: Defi ne moist and dry heat, and explain their modes of action and relative eff ectiveness.

A: A temperature higher than the normal is essential for microbial growth is microbicidal. In dry heat,…

Q: At an air-water interface, fatty acids such as oleic acid liein a one-molecule-thick layer…

A: First the moles of oleic acid is calculated as shown below,

Q: Which of the two has a lower vapor pressure CH3CH2CH2CH2CH2CH2CH2CH3 or (CH3CH2CH2)2 CO. Explain,…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: II. Explain why a bottle of salad dressing that contains oil and vinegar has two layers.

A: According to the rule of thumb - "like dissolves like". Polar solute dissolves in polar solvent.…

Q: Which of the following is NOT TRUE about simple distillation?   a. The greater the difference in…

A: Simple distillation is technique which is used to separate a liquid mixture which consists of…

Q: 1. What is the function of carbon filter in water treatment?

A: According to guidelines we are supposed to solve only the first question. Please post other…

Q: The density of grain alcohol is 0.789 g/mL. Given that thedensity of water at 48C is 1.00 g/mL, what…

A: The specific gravity of grain alcohol has to be given,

Q: The Ability of a substance to exist in different crystalline form a. Lattice b. Polymorphism c.…

A: (1) There are different type of substances or things available in our surroundings. These have…

Q: An example of Eutectic mixture, the freezing point of water is depressed by addition of inorganic…

A: Freezing point is defined as the temperature at which a liquid becomes a solid at normal atmospheric…

Q: 3. Give brief but concise answer in the following: a) Medical products are usually seen with a note…

A: Medical products should always be stored at appropriate temperatures as per instructions.

Q: State a reason of the following statement: (i) Soap do not work in hard water. (ii) The use of the…

A: (i) Soaps are the sodium and potassium salts of higher fatty acids. When soap is dissolved in hard…

Q: Which would you expect to be more effective as a soap,sodium acetate or sodium stearate? Explain.

A: Soaps, are by definition ,salts consisting out of a non polar 'tail' and polar 'head'. They work in…

Q: Describe the following processes:(i) Dialysis(ii) Tyndall effect

A: The solution is made of solute and solvent. The solvent is the major part of the solution hence…

Q: What is the boiling point of the automobile radiator fluid prepared by mixing 1.06 L of ethylene…

A: Given : Volume of ethylene glycol = 1.06 L = 1060 mL                                    (Since 1 L =…

Q: Hard water does not produce lather with soap but instead produces ___.

A: Hard water contains Ca2+ and Mg2+ ions, and presence of these ions is the reason of the hardness of…

Q: PHYSICAL METHODS OF WATER TREATMENT (CLEANING) 1. filtration 2. coagulation 3. desalination 4.…

A: Physical method for water treatment is-  1-Filtration Other given process are always make use of…

Q: These modify the interfacial properties of substances. A. Surfactants B. Aerosols C. Nanotechnology…

A: Answer is A) Surfactants

Q: If the boiling point of the distillate is 83.7 degrees C. How does the boiling point compare to the…

A: Boiling point of a compound depends on the strength of intermolecular forces. Greater is the…

Q: You are in the kitchen. You have a party later today and want to make some strawberry gelatin. Your…

A: This question is based on separation of gelatin (purified collagen) and glycerol. We already have…

Q: 1. How will you compare the amount of dissolved oxygen in a mountain lake at 5 000 it and 18°C with…

A: DISSOLVED OXYGEN The volume of oxygen that  dissolved in water is known as dissolved oxygen (DO).…

Q: Which compound is not extracted from sea water ?industrially A- Mg compounds

A: Which compound is not extracted from sea water industrially?

Q: hich of the following statements is not accurate when considering water and biological molecules? O…

A: The hydrogen bond is an attractive interaction between a hydrogen atom and an electronegative atom .…

Q: DI. Wweh component of soaps and detergents lower the suriace tension of water, Wnich arlows tnerh to…

A: Solution ---- 1) The detergent and soap combine with water and Clean the Cloths.       2) The…

Q: 4. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting…

A: Acetaminophen should have melting point exactly between the range of 169-170.5 oC as per literature…

Q: In what context do the terms hydrophobic and hydrophilic relate to the solubilities of substances in…

A: The substances which have special affinity for water are called hydrophilic and the substances which…

Q: Iwhich a blood cell is placed nanypertonic Solution the bl0od. cell may undergo? Which types of…

A: Hypertonic solution is a solution which has higher concentration of dissolved particles than the…

Q: Obtain the values of vapor pressures of alcohol, water, and glycerin at a room temperature of 20 C.

A: Vapour pressure is defined as the equilibrium of pressure of a vapour above its solid or liquid…

Q: Why don’t soap micelles coagulate and form large glob-ules? Is soap more effective in freshwater or…

A: The cleaning agents that are made by reacting alkali like sodium hydroxide with some naturally…

Q: Please help me With an in-depth explanation

A: A) The alcohol (Ethanol) has lower boiling point because the water has two OH bonds and two lone…

Q: In soap-making, which of the following substances is usually used to produce liquid soaps? (Note:…

A: potassium hydroxide is more common in liquid soap-making. Although it is possible to produce liquid…

Q: State why oils from plant sources remain liquid at 25°C, but that of animal source is solid at the…

A: Answer

Q: Int molecular forces of attraction are often important in holding large molecules together. For…

A: At site B , oxygen of C=O is forming attractive bond with Hydrogen of N-H

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.