what is the final temp of an insulating polymer if a 69.30 g sample with specific heat of 8.315 J/g C initially at 28.3 C absorbed 4.0 kJ of heat?

Q: Just enough ice at 0°C was added to 47.5 g of water at 28°C to cool the water to 0°C. About how much…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: The surface tension of water is 72 mJ/m–2. Calculate the amount of energy required to disperse one…

A: Surface area of sphere = 4πr2 Surface volume of sphere = 4/3 πr3 Surface tension of water = 72 mJ/m2…

Q: What amount of ethylene glycol (molar enthalpy of vaporization=58.8 kJ/mol) would vaporize while…

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Q: Indicate whether each statement is true or false:(a) Elastomers are rubbery solids.(b) Thermosets…

A: True, Elastomers are rubbery solids.they have elastic property. These polymer chain are held…

Q: he crystalline density of polypropylene is 1.121 g/cm³, and its amorphous density is 0.906 g/cm³.…

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Q: What amount of heat, in kJ, would be involved in condensing 11.2 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A: Weight=11.2g ∆Hvap=38.0kJ/mol Molar mass of CH3OH=32.04gm/mole

Q: What amount of heat, in kJ, would be involved in condensing 19.4 g of CH3OH? (AHvap = 38.0 kJ/mol)

A: The process in which gaseous form of a substance changes to liquid form is generally known as…

Q: Determine the amount of energy required to cool down 450.5 g of liquid iron at 1853 ∘C to 25 ∘C, the…

A: Melting point is the equilibrium temperature at which a substance exists in both solid and liquid…

Q: Determine the heat of dissolution, in kJ/mol, of 0.250 mol C2 having a specific heat of 0.84 J/g °C.…

A: Heat absorbed = =mass ×temperature change × Specific heat capacity

Q: The following information is given for silicon at 1 atm: Heat of vaporization = 2.528 × 103 cal/g…

A: Given : Mass of silicon = 44.90 g Initial phase of silicon = solid…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

A: No. of moles = Given mass / Molar mass   No. Of moles of Si = 7.04g / 28.086g/mol No. Of moles of Si…

Q: Classify stainless steel according to type of matter

A: Stainless steels are classified according to their metallurgical structure :- (a) austenitic, (b)…

Q: Dr Kootsookos was cooking breakfast one day and the saucepan handle got hot and crumbled in her…

A: The polymer which is used for making saurcepan handle name is given below.

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: Shown here are cartoons of two different polymers. Whichof these polymers would you expect to be…

A: Intermolecular forces between the polymer chains hold the chains together in the ordered crystalline…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

A: Given: The heat of fusion of Si, (∆Hfus) = 43.4 kJ/mol. The mass of Si, (m) = 9.29 g. The molar mass…

Q: What amount of heat, in kJ, would be involved in condensing 22.8 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A: Given: The mass of CH3OH, (m)= 22.8 g The molar mass of CH3OH, (M)= 32.04 g/mol. The number of moles…

Q: How much heat will 325.0 g H2O at 15.0 oC absorb if the temperature in increased to 90.0 oC? The…

A: Solution

Q: نقطة واحدة نقطة واحدة can be heating and ......33 .reshaped is A. Thermoset. O B. Thermoplastic. O…

A: Thermoplastic polymer are those polymer which can be reshaped by changing the temperature is called…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kj would be needed to melt a…

A:

Q: During condensation polymerization, many monomers join together. What is lost when two monomers join…

A: When two or more monomers engage in a chemical reaction  and form long chain polymers , this process…

Q: One of the critical properties of polymers is elasticity. The ability of many polymeric materials to…

A: Crystallinity  means the degree of structural order in a solid. The atoms are arranged in a regular…

Q: :Aromatic compounds are -32 A - Saturated cycloparaffin hydrocarbons. O B - Unsaturated…

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Q: What amount of heat, in KJ , would be involved in condensing 8.8 g of CH3OH? (Hvap = 38.0 KJ/mol)

A:

Q: ridium forms a face-centered cubic lattice, and an iridium atom has a radius of is 1.357 x 10-8 cm.…

A:

Q: What amount of heat, in kJ, would be involved in condensing 23.1 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A: Given, The amount of heat, in kJ, would be involved in condensing 23.1 g of CH₃OH? (∆Hvap = 38.0…

Q: What amount of heat would be involved in condensing 17.4 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A: Given, amount of CH3OH =17.4 gram∆Hvap= 38.0 kJ/molmolar mass of CH3OH =32.04 g/molwe are asked to…

Q: The repeat unit in polystyrene coffee cup has C6H5CHCH2. If the molar mass of the polymer is…

A: Degree of polymerization = Molecular weight of polymerMolecular weight of monomer   Molar mass of…

Q: What amount of heat, in kJ, would be involved in condensing 18.0 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A:

Q: How do an addition polymer and a condensation polymer differ from each other?

A: Addition polymer:Polymers made up of monomers which are added without the loss of any atoms known as…

Q: What amount of heat, in kJ, would be involved in condensing 12.0 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A: What amount of heat, in kJ, would be involved in condensing 12.0 g of CH₃OH?

Q: t is the difference between a monomer and a polymer?

A: Monomers and polymers are  two different things related to the same molecules. For example in…

Q: Calculate the amount of energy absorbed when 75g ice @ -4C melts to 31 C Did a phase change occur?…

A:

Q: What amount of heat, in kJ, would be involved in condensing 17.6 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A:

Q: Which substance involves no bonding forces except London dispersion forces?   NaCl(l) HF(l) N2(s)…

A: London dispersion force- It is a type of force acting between atoms and molecules that are…

Q: Determine the heat of dissolution, in kJ/mol, of 0.250 mol C2 having a specific heat of 0.85 Jig °C.…

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: Olivia and Jaime  are trying to increase the temperature of a substance by heating it. . What is the…

A:

Q: What amount of heat, in kJ, would be involved in condensing 12.8 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A: Mass of CH3OH = 12.8 gm  Molar mass of CH3OH = 32 gm/mole  Number of moles of CH3OH = 12.8/32 = 0.40…

Q: Recall the last time you bought a cup of coffee or hot chocolate on a particularly cold day. The cup…

A: No; the specific heat calculated is lower than it should be due to the heat lost

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: What amount of heat, in kJ, would be involved in condensing 10.1 g of CH;OH? (AHvap = 38.0 kJ/mol)

A: Given data, Mass of CH3OH=10.1g∆Hvap=38.0kJ/mol

Q: he metal has a molar mass of 206.77 gmol and crystallizes in a body centered lattice and has a…

A: Given : Molar mass =  206.77 g/mol Density =  14.1 g/cm3.

Q: A sample of metal has a density of 3.1 g/cm³. The metal has a body centered cubic structure with a…

A: The density of body-centered cubic lattice is = 3.1 g/cm3 The edge of the unit cell is = 4.507x10-8…

Q: Determine the heat of dissolution, in kJ/mol, of 0.250 mol C2 having a specific heat of 0.82 J/g °C.…

A: Specific heat  = 0.82J/g °C Mass of C2  = 9g No. Of moles in 9g of C2 = 9÷24 = 0.375mol Specific…

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

A: Melting point is defined as the temperature at which the solid and liquid forms of a pure substance…

Q: Determine the heat of dissolution, in kJ/mol, of 0.250 mol C2 having a specific heat of 0.81 J/g °C.…

A: Given: mass of water = 142 g initial temperature of the system was 18.5 °C equilibrium at a…

Q: A learner simulates the process of condensation in a field investigation. Whích simulation did the…

A: The learner performed option : A. the learner placed a glass of water at 10∘C outdoor when the air…

Q: 4. Polymer structure are involve. A. One structure. B. Three structure. C. Two structure. D D

A: The monomers are combined chemically to form large molecular structure called polymers.