Rationalize the fact that hydrogen bondinghas not been observed between CH4 molecules.

Q: Which type of cross-link involves interactions between two nonpolar R groups?

A: There are various types of interactions like hydrogen bonding, dipole-dipole interactions, London…

Q: Do Br2 and I2 appear to be more or less soluble in CCl4 than in H2O?

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Q: Illustrate, with chemical formulae, the influence of the size of the side groups of a polymer…

A: Polymer is a large molecule which is made up of the small repeating units. These molecules have the…

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: (b) Give detailed synthesis, properties and uses of Kevlar. (c) How symmetry of repeating units in…

A: Introduction :  Crystallinity of polymer can be defined as the structure of polymer in terms of…

Q: Part C (solvents labeled C): How does the number of hydrogen bonding sites within a molecule affect…

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Q: From the literature identify the glass transition and melting temperature of the following polymers…

A: Glass transition temperature :- The temperature range at which a polymer starts to become like a…

Q: Explain briefly and clearly the following concepts, taking as reference the molecule of n-butane and…

A: Only first three subparts are solved. The molecular formula of n-butane is C4H10. The chain formula…

Q: he radius of gyration of a long chain molecule isfound to be 7.3 nm. The chain consists of C- C…

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Q: A certain lipid has the structure shown below (R1 and R2 are fatty acyl chains). Could a sample of…

A: Lipid are the molecules that contain hydrocarbons and which are the building blocks of the structure…

Q: Octane (C8H18) boils at 125°C as compared to water which boils at 100°C. This information suggests…

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

Q: How many total degrees of freedom does C8H10N4O2 have?

A: The formula for calculating degree of unsaturation is = (2C + 2N -  X -  H) / 2 Where C = number of…

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: Calculate the volume of hydrogen at 0°C and 1.00 atmthat is required to convert 500.0 g linoleic…

A: Given mass of linoleic acid is 500.0 g Molar mass of linoleic acid (C18H32O2) = 280.45 g/mole

Q: Trans-oleic acid (18:1,D9) has a melting temperature of (44.5C) and cis-oleic acid (18:1,D9) has a…

A: Since we know that the melting point of any molecule is proportional to the effective packing of the…

Q: What is the LUMO of the Li₂ molecule?

A: The lowest unoccupied molecular orbital is known as LUMO.

Q: Since the conditions for hydrogen bonding are not satisfied in the CH3CH2CH2CH3 molecule,…

A: In this question, we will discuss about why this Compound doesn't have intramolecular Hydrogen…

Q: Explain why bimolecular condensation is a poor method for making unsymmetricalethers such as ethyl…

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Q: Outline some methods for obtaining ultra-high orientation in polymers (e.g. Kevlar).

A: Роlymers аre mаteriаls соmроsed оf lоng mоleсulаr сhаins thаt аre well-ассeрted fоr а wide vаriety…

Q: Drawe the skeletal structue for CH3CH2C(CH3)2CH2C(CH3)3

A: Given :- CH3CH2C(CH3)2CH2C(CH3)3  To draw :-  skeletal structure of above given condensed formula

Q: Some proteins reside in the hydrophobic lipid bilayer of the cell membrane. Would hydrophilic groups…

A: Hydrophobic: Hydrophobic means repelling of water molecules. Hydrophobic molecules are insoluble in…

Q: Hexylamine and triethylamine have the same molar mass. The boiling point of hexylamine is 129 °C…

A: To explain why the boiling point of hexylamine is 129 °C, whereas that of triethylamine is only 89…

Q: A certain lipid has the structure shown below (R1 and R2 are fatty acyl chains). Could a sample of…

A: Lipid is the molecules that contain hydrocarbons and which are the building blocks of the structure…

Q: Which classes of amino acids have side chains that can form ion-dipole interactions with water?

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Q: KHF2 is possible but not KHCL2. Explain.

A: Fluorine and chlorine belongs to 7A group.  Fluorine is more electronegative than that of chlorine,…

Q: What makes hydrophobic interactions favorable?

A: The hydrophobic effect is the observed tendency of nonpolar substances to aggregate in an aqueous…

Q: Assume the energy of hydrogen bonds per base pair to be 5.86 kJ-mol-1. Given two complementary…

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Q: CH3CH2CHCH2N(CH3)2 CH3

A: IUPAC name: N,N-Dimethyl-2-methylbutan-1-amine

Q: A crosslinked copolymer consists of 59 wt% ethylene (C2H4) repeat units and 41 wt% propylene (C3H6)…

A: Since the weight % is given and we need mole % to find the fraction. Assuming we have 100 gm of…

Q: Which of the following processes is Hydrogen bonding observed?   A.Dissolution of chloroform in…

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Q: Cyanamide, NH2CN, has a melting point of 45 °C. (a) Draw a dot-and-cross diagram to illustrate the…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

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

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Q: Explain the meaning of malleable and ductile.

A: Malleable : It is the quality of something (mostly metals) , so that something can be shaped and…

Q: Briefly describe, using examples and sketches as appropriate, an experiment that illustrates how…

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Q: intermolecular forces responsible for the folding of amino acid chains into proteins

A: The molecular forces of attraction which are acting between two molecules of the same or different…

Q: What effect does the presence of an α-Methyl group in a polymer chain have on the glass transition…

A: The effect of alpha Methyl group on the glass transition temperature (Tg) in a polymer chain is as…

Q: Give the shorthand structures of poly(vinyl chloride) and nylon 6,6 ?

A: Polymers are the large molecules made up combining a number of small organic molecules with large…

Q: explain how serine is capable of hydrogen bonding but it could also form covalent bonds?

A: 1. Hydrogen bond forms between hydrogen atom attached with highly electronegative element (N, O) and…

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: What is the 3-dimensional drawing of this structure?

A: Note: Since  you have posted question with multiple parts, we will solve only first three part for…

Q: Which of the following structures is not an isomer of cgH15 ?

A: Isomer - Compounds which have same molecular formula but but different in properties and…

Q: Water rises in capillar tubes because A. cohesion is greater than adhesion B. adhesion is greater…

A: Capillary action can be defined as the flow of a liquid into a narrow tube. The liquid flow in…

Q: What are the expected intermolecular interactions in the following molecule ?   H3CCH2CH2CH2F

A: The electronegativity of fluorine is greater than carbon. Thus the given molecule has a polar…

Q: From the tabulated data, deduce which fat/oil sample could be best described as saturated,…

A: Saturated is the term used for the molecules containing only single bonds. Alkanes are the saturated…

Q: Suggest any examples of PAT Tools used for Crystallisation of Small Molecule Drugs ( SMD )…

A: For crystallisation of small molecule drug (SMD) purification , generally  use spectroscopic…

Q: Explain why the configuration of a polymer of isobutylene is neither isotactic, syndiotactic, nor…

A: Configuration of a polymer of isobutylene: The three possible configurations for polymers formed…