For the structures shown below, state the number of pi electrons present in the molecule. H- H. H Number of pi electrons Number of pi electrons %3D Is the molecule aromatic according to the Huckel criteria? If the molecule were planar, would it be antiaromatic?

Q: Why each polymer gives a different melting temperature, Tm?

A: Polymer is consisting of more no. Of monomer . By connecting many repeating unit they are made up…

Q: H # # # H 4 I I L II 1 ク-3ー City CHy H CH, ぎ

A: The given polymer structure is:

Q: 20. What is the best method used to separate the components of the mixture of benzene, toluene, and…

A:

Q: НО OCH₂ 1. Na 2. dilute H2O

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: The geometry of trimethyl amine N(CH3)3 is pyramidal with bond angle of 108.7 degrees whereas the Si…

A: The geometry of trimethyl amine N(CH3)3 is pyramidal with bond angle of 108.7° whereas the Si analog…

Q: ĮKelerences) VISUALIZATION Polyester Formation %3D но-А-он но-с- В-с-он ethylene glycol (A group)…

A: The ethylene glycol reacts with terephthalic acid to form polymer.

Q: Explain the relationship between monomers and polymers.?

A: In chemistry, a monomer is a single molecule and the building block of the polymer. For example,…

Q: 13. Acetaminophen, a popular painkiller, has the following structure: H он C= || CH,-C-N-C С—ОН H H…

A:

Q: high polarity.

A: 7) polypropylene is lower flexural strength .It is 40 MPa

Q: Explain the main properties of polymers that make them desirable  for many applications

A: Polymers are macromolecules formed by the covalent bonding of monomer units. Polymers are very…

Q: Aramids (such as Kevlar) are macromolecular compounds which can lead to desired materials for…

A: H-bonding It is the bonding between H and electronegative atoms like F, O and N is called H-bonding.…

Q: Draw and then rank order these polymers from highest tensile strength to lowest:…

A: Ans. polytetrafluoroethylene (PTFE): Polytetrafluoroethylene, or PTFE, is made of a carbon backbone…

Q: A. Decomposition B. Polymerization C. Single displacement D. Synthesis

A: Chemical reactions are those process where one or more molecules or atoms reacts together to produce…

Q: (5), 7. Bel₂(aq) + Cu₂SO4(aq) →→→

A: The question is based on the concept of chemical reactions.  We need to identify the reaction &…

Q: 15. Nylon and cotton are a. addition polymers b. condensation polymers

A: Nylon and cotton both are classified as condensation polymer. Nylon is a polyamide as it form…

Q: 7- is making plastic into a new polymer. incineration O recycling O biodegradable 8-Plastic that is…

A: Incineration -  Incineration is a process of burning of waste material present in organic Substances…

Q: A sample of a polyethylene rope weighs 15.12 g per cm. If each chain contains 7000 repeat units,…

A: A polyethylene rope was given to have a weight of 15.12 g/Cm. The polymer chain of ethylene is given…

Q: 6 Convert ethanol into a polyethylene glycol chain (better known as PEG. You can google the…

A: The functional group is a key component associated with a molecule that furnishes the notable…

Q: Three molecular requirements for crystallinity in polymers

A: POLYMERS: Polymer is a macromolecule which is made up of small monomer molecules that are…

Q: ) when you start with the original formula, p1 v1=p2v2, what do you get when you isolate P1? 2) A…

A:

Q: An introduction and defention for polymers?

A: Polymers are those class of materials which have high molar mass and they are widely used in today's…

Q: Which one below is true for thermoplastic polymers? * They are harder and stronger than…

A: The correct option is (d) (a) They are harder and stronger than thermosetting polymer. It is false…

Q: 45) Calaulate the moss b. UF4 c. Ca He d. Agad E NaH8O, Fi MnOz

A: Molar mass of a compound is the the sum of the atomic mass of elements present in that compound.

Q: ) What is the meaning of each the following :(choose four only) 1.Synthesis 2.Nanostructured…

A:

Q: CH₂1₂ Zn(Cu) diethyl ether

A: When an alkene reacts with CH2I2 in the presence of Zinc a cyclopropane derivative is formed. This…

Q: II. Cite the importance of organic chemistry in various fields like industry, health, and medicine.

A: Organic chemistry is defined as the branch of chemistry which deals with the preparation, properties…

Q: None

A: To solve the question, lets fill in the missing structures in the pathway step by stepStep-by-Step…

Q: O Macmillan Learning A portion of the polymer polystyrene is shown. H C-C- Ο Η H H HICIH | H H H H H…

A: Polystyrene is a polymer composed of repeating units linked together to form a long chain.

Q: KOH changes into K2CO3 after absorbing CO2 gas. Select one: True False

A: Given here a statement as follows,KOH changes into K2CO3 after absorbing CO2 gas.we are asked the…

Q: I. Complete the reaction map below A.

A: alkyne upon catalytic reduction (H2/Pt) to give alkane alkyne with ozonolysis triple bond…

Q: b)_________ H20(1) + CO2(g)+ LiNO3(aq)

A: Given iincomplete reaction : ______    + _______     ----------> H2O(l) + CO2(g)  + LiNO3(aq)We…

Q: 3: A method for removal of dissolved organic compound from wastewater

A: There are different processes and methods for removal of dissolved organic compound from wastewater…

Q: Y =Y. dilute NaOH + NaCl CI Он Conc. H,SO, H,O OH

A: In an addition reaction one molecule combine with other to form a large molecule. In elimination…

Q: Briefly describe the answers pertaining to the following 2. What is the name of the type of…

A: The given reaction is taking place in presence of light so this is an example of  free radical…

Q: 1- has higher tensile strength. * О Ероху O polyethylene O polypropylene

A: Definition: Tensile strength, maximum load that a material can support without fracture when being…

Q: What is the change in oxidation number for the carbon indicated by an asterisk in sucrose and carbon…

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we…

Q: The structure shown is an example of a type of macromolecule (carbohydrate, lipid, protein, or…

A:

Q: For the following compound: CH3-(CH₂) 14-C-0-(CH₂)29-CH3 a. Is this an example of a wax, fat or oil:…

A:

Q: Which point is not related to transition metal= O They exhibit high melting and boiling points O…

A: Correct Option : They do not show variable valency

Q: HCI ZnCl

A:

Q: 1. What is the most appropriate way to dispense 1.38 g of solid sodium chloride? With a graduated…

A: with the help of spatula is the most appropriate way to dispense 1.38g of Solid sodium Chloride.…

Q: 1) Buli 2) Etl 3) H* Cl2 (b) A B

A: We have to give the Missing product for the following given reaction as follows in step 2:

Q: SeO2 4. Ph SeO2 5.

A: Selenium Dioxide (SeO2) is an oxidising agent used to carbonyl compounds or alkene compounds. It…

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.