Describe how a cholesteric liquid crystal phase differs from a nematic phase?

Q: explain further why this statement is true "A saturated fatty acid sample has a high boiling…

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Q: What is the importance of ethyl alcohol and talc in the Concentrated Peppermint Water preparation

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Q: Discuss the structure of phospholipids. Explain the dependence of freezing (gel to liquid crystal…

A: Answer - phospholipids - Phospholipids, are a class of lipids whose molecule has a hydrophilic…

Q: he reason for its appearance in the molecule? Show the effect of the inductive effect in molecules:…

A: When there is unequal sharing of bonding electron between a covalent molecule then a permanent…

Q: What is the Structure of the tetra ammine cupper(II) sulphate monohydrate?

A: The structure is molecular represented of chemical compound. The compound given is co-ordination…

Q: What is the use of 95% ethanol in caffeine extraction from tea?

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Q: Luminol is insoluble in water, however it does dissolve in aqueo- xplain.

A: The question is based on the principle of solubility. we have to identify the reason why luminol is…

Q: Imagine that phenol ("hydroxybenzene") and nitrobenzene are reacted (in separate beakers) with a hot…

A: HYDROXY GROUP OF PHENOL IS A ORTHO -PARA DIRECTING GROUP THAT MEANS  IT ACTIVATE RING AT ORTHO&…

Q: What compound gave a yellow globule insoluble with water with concentrated HNO3 and concentrated…

A: We have to explain and draw the structure of  molar mass is C10H14 as follows in step 2:

Q: What type of forces are responsible for the occurrence of physisorption?

A: The accumulation of the molecules at the surface and not in the bulk is termed as adsorption.…

Q: In steam distillation water and essential oil distill over together (co-distill). What properties…

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Q: Which of the following benzene derivatives would be most soluble in benzene? Why? Compound A…

A: Compund which is more soluble in benzene is given below.

Q: Which of the following substances should be the most soluble in ethanol (CH3CH2OH)? a. Mg3(PO4)2 b.…

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Q: Describe the layers that can form in a separatory funnel in extracting caffeine from tea leaves and…

A: Given : Caffeine extraction.  To find : Layers formed in extraction of caffeine by use of separating…

Q: Dilute solution of alkaline potassium permanganate is known as Baeyer's reagent Tollens' reagent…

A: Dilute solution of alkaline potassium permanganate is known as ??

Q: What is the intermolecular force that diethyl phthalate (C12H1404) has? Explain. Is it saturated or…

A: Compounds containing mainly carbon and hydrogen are called organic compounds.  These are classified…

Q: Find three examples of compounds (other than luminol) that undergo chemiluminescence upon a chemical…

A: Chemiluminescence:-    Chemiluminescence is the production of light from a chemical reaction.

Q: molar heat of vaporization of some unknown compound X at its normal boiling point 1.7 K is 3.2…

A: The question is based on the concept of chemical thermodynamics. We have been given by  molar…

Q: The melting point of pure cinnqmic acid is 133-135c .according to your melting point composition…

A: Melting point composition diagram: It is a kind of diagram that is useful for to representing the…

Q: Explain the translucent spot observed when coconut oil is brought in contact with paper

A: when light hits a piece of paper. Paper is made of fibers, and there are little pockets of air…

Q: A sample consists of butyric acid, acetic acid and ethylene glycol. At a distilling temperature of…

A: Distillation is a chemical technique in which a mixture of two or more miscible liquids are…

Q: gives

A: Compound X is not compound A. This is the true statement.

Q: Which of the following compounds will be most soluble in toluene(C7H8)? A) ethylene glycol…

A: The general solubility rule is " like dissolves in like " It means a polar substance is soluble in…

Q: Sodium formate is a white solid. Draw an atomic/molecular level picture to represent solid sodium…

A: 1)

Q: How does the composition of the distillate change over the course of a distillation?     It begins…

A: Option C is Correct Answer.  i.e.,   It begins rich with the less volatile phase, and ends rich…

Q: What physical property is used to determine what components will separate out during the process of…

A: Fractional Distillation  It is the process of separating the mixture into its component , the…

Q: eutical preparation h

A: When two solutions have same osmotic pressure and salt concentration they are said to be isotonic…

Q: How do soaps act as cleansing agents in the process of micelle formation and emulsification? Explain…

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Q: illustrate the intermolecular bonding of KCl with itself

A: KCl is an ionic compound.  It is made up off K + and Cl- ions .

Q: Are sodium carbonate and ethanol a reagent in extracting caffeine from the tea leaves? Explain the…

A: Extraction is a method used for separating organic compound from mixture of compounds .  Acid - base…

Q: Identify the two layers in the procedure of caffeine extraction from tea bags. In which part does…

A: The caffeine is more soluble in methylene chloride than in water and therefore it will move to…

Q: Identity the intermolecular attentions which exists in each of the following. a. N2 b.H2O c. NH3 d.…

A: See explanation

Q: Explain the differences in melting point of these test compounds by relating with their structures…

A: Melting point is defined as the temperature at which a solid starts melting and becomes liquid.   it…

Q: A mixture of two liquids with the boiling point of  65 oC and 73 oC has been subjected for…

A: Distillation is the most common technique applied to separate/ purify a mixture of two or more…

Q: What are the answers for these questions? 1.Why is it necessary that the oil bath/water bath is…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: explain why on addition of 1 mol of NaCl to 1 litre of water, the boiling point of water increases,…

A: NaCl is a non-volatile solute, therefore, addition of NaCl to water lowers the vapour pressure of…

Q: What is an emulsifying agent? What role does it play in forming anemulsion?

A: Emulsifying agents are the compounds that acts as a stabilizer in emulsions. Emulsions are generally…

Q: Write an equation that shows the dehydration of potassium fluoride dihydrate ?

A: Dehydration :-  The process of removal of water from a substance is known as dehydration.

Q: What signal that the lower boiling liquids has been completely distilled?

A: Think about the parameters and components on which distillation depends, this will gives a fair idea…

Q: 3. What were the structural features of the molecules that were soluble in aqueous bases (5% NaOH…

A: 3. Solution - According to the question - Given - Aqueous base soluble molecules are acidic in…

Q: Which of the following is not an example of a solid/liquid extraction? Preparation of tea…

A: Which of the following is not an example of solid liquid extraction

Q: The Ksp of A3B2 = 1.04x10^-23.What is its solubility in water?

A: Introduction- When a sparingly soluble salt is dissolved in water then the salt will remain in…

Q: Ethyl alcohol and water in liquid form are also an azeotropic mixture. Why is that?

A: The liquid mixture that boil at constant temperature and composition in vapour phase is exactly…

Q: Why is there a difference in the appearance of the flour –thickened paste and the…

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