Why materials with a high melting point have a high modulus of elasticity and low thermal expansion?

Q: The atomic packing factor of a metal is 0.74. The density of the material is 8.97 g/cm and A = 58.69…

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Q: High-density polyethylene (HDPE) is opaque while low-density polyethylene (LDPE) is transparent.…

A: Polyethene is widely used tharmoplastic now a days.Based on molecular structure it can be…

Q: What is the difference between the hardening process of Portland cement and the hardening process of…

A: Portland cement is a powdered mixture, and its hardening process is different from that of clays.…

Q: Which materials are best suited for discharging excess static charge on your clothing during winter,…

A: Since we know that  a conductor are the materials which allows electrons to move freely  where as an…

Q: What is a polymer? What is the difference between a polymer and a copolymer?

A: Polymer is a type of natural or synthetic substance which is composed of large number of…

Q: How does crystallinity affect the mechanical properties of materials. with proper reference

A: Introduction: We have to explain how crystallinity affect the mechanical properties of material.

Q: 12. Which is NOT TRUE about thermoplastic polymers? a. they maintain their shape and strength when…

A: Option (a) is correct choice... Thermoplastic polymers become soft on heating and reshaped...

Q: The density of an unknown polymer is 1.875 g/cm³ with a % crystallinity of 50%. If the density when…

A: Density of a substance is representative of including both amorphous and crystalline structure.

Q: What is the primary structural feature necessary for a molecule to make it useful in a condensation…

A: Several monomers or oligomers (molecules with 3-10 repeating units), react with one another and…

Q: Arrange the following substances in terms of highest to lowest Shear Modulus values. Bone, Brass,…

A: Shear Modulus (G) is the ratio of shearing stress to the corresponding shearing strain. The SI unit…

Q: Explain the term, metals are shiny, malleable, and ductile?

A: Metals have a tendency to lose electrons in order to attain a stability or stable electronic…

Q: Classify each of the following as a conductor, insulator, or semiconductor: (a) phosphorus; (b)…

A: The given element has to be classified as conductor, insulator, or semiconductor.

Q: Which of the following materials would exhibit the mechanical behavior denoted by the arrow in the…

A: The mechanical properties of polymer can be given according to Hooke's law and relation between…

Q: Palladium forms a face-centered cubic lattice, and a palladium atom is 274 pm in diameter. Calculate…

A: Given;

Q: Why are covalently bonded materials generally less dense than those that are bonded ionically or…

A: Since the case when the bonds are directional, that is they are present in a particular direction…

Q: band gap on insulator i understand the band gap difference between conductor, insulator, and…

A: From the given data we are going to answer why there is a large energy gap in insulators.

Q: Describe TWO (2) important factors that affect materials chain flexibility and properties Discuss…

A: Hello. There are multiple questions posted. The first question has been solved. To receive solutions…

Q: Compare fracture mechanisms between ductile metals and polymers

A: Ductile fracture is the most common room-temperature mechanism of failure in metals. We will reserve…

Q: 4- Rhodium has an atomic radius of 0.1345 nm and a density of 12.41 g/cm3. Determine whether it has…

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Q: Explain the factors that affect the length of a block copolymer.

A: A block copolymer is a multiphase heterogeneous polymer in which different blocks (segments of…

Q: Rapidly Cooled Materials obtains amorphous microstructure True False Low thermal and electrical…

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Q: Describe how molecular weight & structure, thermal & physical properties are analyzed in polymers.

A: Answer - According to the question - Polymers - A polymer is any of a class of natural or synthetic…

Q: Why do we prefer to coat metals with ceramics? What kind of additional property would a ceramic…

A: Introduction: Metal coatings are coatings that are applied to metal in order to protect the metal…

Q: Using your own words explain why ceramics are stronger and stiffer than polymers

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Q: Explain why an elastomer under tensile load contracts on heating. Compare this with the behaviour of…

A: Elastomers are unique polymers that have good elastic properties. In other words, an elastomer is…

Q: Why are impurities added to silicon dioxide in the glass making process? To increase mechanical…

A: Impurities like boric oxide , sodium oxide and aluminium are used while making the glass

Q: Why is graphite a good lubricant? What advantages  does it have over grease or oiled based…

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Q: C. Comparison between an amorphous and crystalline solid Physical Properties Texture Melting point…

A: There are four fundamental states of matter- solid, liquid, gas, and plasma. Solid molecules have a…

Q: What conditions would prohibit the use of thermoplastic polymer

A: The polymer which can be melted and recast indefinitely called thermoplastic polymer.

Q: Do higher molecular weight polymers have a higher elastic modulus? Give a reason why this is/is not…

A: An elastic modulus can be defined as the amount of resistance a substance would put to stop getting…

Q: The measured fracture strengths for most brittle materials are significantly lower than those…

A: Brittle substances are those substances that are liable to fracture when stress is applied to them.

Q: The property of a material that measures the response of the solid to visible light. conductivity B)…

A: There are various properties which are divided among various categories like mechanical property,…

Q: Explain the packaging listed below: - Compact cubic structure; - compact packaging(HCP) - Cubic -…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Chemistry If an FCC material terminated at a surface, which plane would give you the lowest surface…

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Q: What kind of process can a polypropylene face mask turn into polymeric carbon dots?

A: The waste masks are first sulfonated in an autoclave, then used as carbon source and turned into a…

Q: Polymorphism can exist in any crystalline material, not just molecular solids. True or false?…

A: Crystalline solids are those where a long-range order is present in the arrangement of constituent…

Q: (iii) Explain what packaging density is. Calculate the packaging density of the FCC and BCC…

A:

Q: ng your own words explain why ceramics are stronger and stiffer than polymers

A: Polymers can be defined as a large macromolecule made up from large number of monomers

Q: what is the final temp of an insulating polymer if a 69.30 g sample with specific heat of 8.315 J/g…

A: Given : Amount of heat absorbed = 4.0 KJ = 4000 J                       (Since 1 KJ = 1000 J)…

Q: Is Buckminsterfullerene A POLYMORPH of graphene? 2. Does schottky defects induce TENSILE forces in…

A: True or false: