One of the steps in the preparation of Calamine lotion is by grinding or rubbing the active substance in a mortar with the aid of a pestle. How do we call this process?  A. Trituration B. Comminution C. Levigation D. Geometric Dilution

Q: Calculate the H+ ion concentration in lemon juice having a pH of 2.40. 4.0 x 10-2 M 250 M 0.38 M 4.0…

A: pH = 2.40

Q: percent by mass of sulfur in P4S10

A: The given question can be solved by using the mass percentage formula which is- Mass percent = Mass…

Q: Prove that the statement is correct, give the solution and formula of the problem  molar mass of P4…

A:

Q: The energy sublevels are represented by:   a. s, p, d, f   b. integers 1, 2, 3,....   c. IA, IIA,…

A: Given,  The energy sublevels are represented by:   Options are :     a. s, p, d, f   b.…

Q: proposed multiplication or division cm = 7 cm 8.0 m 10m ? Is this possible? O yes no no yes no…

A: ->Multiplication and division of different units are possible but addition and subtraction of…

Q: Reaction B. Draw the product of reaction B. Select Draw Rings C H O Ć More Erase Q2 Q

A: Claisen condensation : Condensation of esters produces β keto esters in the presence of NaOEt and…

Q: 2) Preparation of buffer solutions: a) Prepare 1000 mL of pH 5.50 acetate buffer solution from…

A: 2. a) Given that, an acetate buffer is prepared by 0.1000 M NaOH and 0.1000 M CH3COOH. The volume of…

Q: What is the principle of he milk and vinegar experiment and Why is skimmed milk tends to give the…

A: Ans. This plastic-like substance forms from a chemical reaction between the milk and vinegar.…

Q: Replicate tests showed the following lead content results of a blood sample: 0.752, 0.756, 0.752,…

A:

Q: You add 50.00 uL of 25.00 M NaOH (m = 39.9971 g/ mol) to 100.0 mL of a 0.252 mol/L NaCI (7=57.959 g/…

A: NaOH is a strong base while NaCl is an ionic salt hence it can't form buffer or can't react with…

Q: What factors determine whether a collision between two reactant molecules will result in a reaction?…

A: Collision theory of reaction rate: According to the collision theory of reaction rate, the randomly…

Q: REACTIONS 1. concentrated sulphuric acid + solid potassium chloride 2. concentrated sulphuric acid +…

A: When sulfuric acid reacts with halide ion they undergoes redox reaction. Here from the given…

Q: 2. Devise a synthetic strategy to complete the following transformation. a. yhyy CO₂H H₂N CO₂H

A: Note : Trans amination of above staring material produces Valine . Step 2 : BOC protection of amine…

Q: In the early morning when the temperature was 13.9 °C, a motorist measured her tyre pressure at 185.…

A:

Q: An aqueous solution of perchloric acid is standardized by titration with a 0.175 M solution of…

A: Given that, The concentration of the base, calcium hydroxide is S1 = 0.175 M, The volume of the…

Q: An unknown amount of a compound with a molecular mass of 275.78 g/mol is dissolved in a 10 mL.…

A: According to Lambert Beer's law      A = € c l  Where A = Absorbance, € = molar absorptivity. c=…

Q: Imagine that you decide that you want to make tert-butyl methyl ether. Which of the following…

A: Sodium hydride (NaH): The alkali metal hydride is primarily used as a strong yet combustible base in…

Q: ● Apply what you have learned about open, closed and isolated systems to the following situations.…

A: The systems are defined based on the exchange of energy and mass. If energy and mass both can be…

Q: Choose which of the given equations is a oxidation-reduction (redox) disproportionation reaction. 3…

A:

Q: Q1/ Determine the heating area required for the production of 1000 lb/hr of 50% from 10% NaOH feed…

A: given data  production rate F=10000 lb / hr = 4535.92 kg/hr concentration of feed xf=10% NaOH…

Q: What is the reason behind the portion-by-portion evaporation of DCM in the extraction of eugenol?…

A: The solution of the given question is

Q: 2. Give the values of the four quantum numbers of an in the following orbitals: (a) 3s, (b) 4p, (c)…

A: Four quantum numbers of an electron

Q: contrast the initial and final states of a system that has undergone a reaction producing more gas…

A: If a reaction on completion producing more gas molecules it's resultant entropy will increases. This…

Q: 5. H3C CH3 H 10.

A:

Q: Draw the structures of organic molecules which fits each of these descriptions: An alkane   An…

A: Here I am drawing the first molecule of their own homologous series, i.e. molecules which has only…

Q: Draw a picture of and describe with at least one sentence dipole-dipole forces between two molecules…

A: Dipole Forces occurs Due to Electronegativity  difference in the atoms of molecules.

Q: (D) (E) СІ. CN ОН

A: D. Fridel craft acylation. Here electrophile is ethyl cation. N,N-dimethyl amino is electron…

Q: List all possible values of the angular momentum quantum number / for an atomic electron with…

A: Note : Principal quantum number n = 6. Angular quantum number l is having 0,1,2.....n-1 values.…

Q: At the same temperature, which of the following gases will have the fastest rate of effusion? A) CO…

A: Choose option for the fastest rate of effusion ?

Q: 5. Which type of battery uses a zinc anode and a graphite rod cathode embedded in a paste of MnO2,…

A: Given,  Options are :

Q: i need help with the answer and the chegg answer might be wrong and I really Need to get the right…

A: We have to give the retro synthesis pathway for part a.

Q: Two 20.0 g ice cubes at −21.0 ∘C are placed into 215 g of water at 25.0 ∘C. Assuming no energy is…

A:

Q: The half-life of protactinium-234 is 6.69 hours. What fraction of a given amount remains after 26.76…

A:

Q: 4. Use the following reactions and AH values given below to determine the heat of reaction for CH4…

A:

Q: Prove that the statement is correct, give the solution and formula of the problem  The correct…

A: Here we have to prove the given statement is correct.

Q: Depict and explain the Crystal field stabilization theory based on the color the below complexes.…

A:

Q: Write and evaluate the slater determinant for Li atom. Provide clear handwriting and clear image

A: Slater determinants are constructed by arranging spinorbitals in columns and electron labels in rows…

Q: The most suitable method of separation of 1:1 mixture of ortho and para-nitrophenols is (a)…

A: 1. (c): The o- and p-nitrophenols are separated by steam distillation since o-isomer is steam…

Q: 3. When the following redox equation is balanced with smallest whole number coefficients, the…

A: Balanced the redox reaction and determine the coefficient of I- under acidic condition ?

Q: I. II. RC-CH₂ +2H₂C=CH₂ - H₂ ?NH: — CH2—NH á nHỌỌC CHỊ COOH for Multiple Choice (CH₂)6 I and II…

A: I) this polymerization is carried out with the help of radical mechanism.

Q: If-Life The half-life of plutonium-239 is 24 110 years. Of an original mass of 100.g, how much…

A:

Q: Fill in the information missing from this table: subshell principal quantum number n 3p 0 4f 1s Some…

A: The given subshells are 3p ,4f and 1s

Q: Consider the phase diagram of kryptonite shown below. P (atm) 1- 10 20 30 40 50 60 70 T (deg.…

A: From the phase diagram, the slope of the solid-liquid curve is positive.  We can say that the Volume…

Q: де + HOCH₂CH₂OH HCI он +

A:

Q: Air is approximately 78% nitrogen, 21% oxygen, and 1% argon (note that unless stated explicitly, gas…

A: Given data,Percentage of N=78%Percentage of O=21%Percentage of Ar=1%Average volume=400mLInitial…

Q: How many milligrams remain of a 15.0 mg sam- ple of radium-226 after 6396 years? The half-life of…

A:

Q: A vehicle is moving along a straight line having an initial speed of 10 m/s. It is experiencing a…

A:

Q: For the boxes on top of the arrow, fill in the reagent(s) and solvent(s). Tf-0 1. D 2. HO.

A: Note : Heck coupling followed by methyl deprotection. ( see below).

Q: molar mass of P4O7  in grams/mol

A:

Q: An unknown radioactive element decays into non-radioactive substances. In 700 days the radioactivity…

A:

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.