3. Using the data given below for two PTFE polymers, determine the percent crystallinity of a...
Current Attempt in Progress The density and associated percent crystallinity for two polytetrafluoroethylene materials are as follows: plg/cm3) crystallinity (%) 2.111 61.4 2.280 77.2 (a) Compute the density of totally crystalline polytetrafluoroethylene. g/cm3 (b) Compute the density of totally amorphous polytetrafluoroethylene. Pa = g/cm3 (c) Determine the percent crystallinity of a specimen having a density of 2.28 g/cm % crystallinity =
The answer to part 1 is NOT 1.09 g/cm^3 This problem involves concepts of materials engineering. Please show all steps and box your final numerical answers. Please DO NOT copy other Chegg solutions of the exact same problem. I will give a positive rating if all the answers are correct. Chapter 14, Problem 14.26 Multistep The density and associated percent cryitfor f to nylon 6,6 materials are as followes (g/cm3) Crystallinity (%) 1.188 1.152 67.3 43.7 Compute the densities of...
Can you guys please help me with this Percent crystallinity may also be determined using outputs from DSC. a. Explain how DSC works. b. Explain how you can determine percent crystallinity from DSC. c. Using this article: http://www.perkinelmer.com/Content/appicationnotes/app thermaicrystailinitythermo plastics.pdf and the information below. Determine the percent crystallinity in another PET sample: i. Delta H_m = 10J/g ii. Delta H_c =5J/g
b and e only C2HsOHD+301(g)->2 CO-(3)+3 H0O) Using ΔΗ0's data given below, determine the ΔΗ (a) (3 marks) (b) Determine the D(O-O) in 02(g). (3 marks) (c) Determine the AS° and comment on its value. (2 marks) (d) Determine the AGo and comment on its value. (3 marks) Comment this (4 marks) A 25 °C, the liquid ethanol reacts very slowly with O2(g). observation and explain the inconsistence (if any) with your answer in part (d). (e) D (in kJ...
Measur Questions 1. Which measurement was most precise? a) length of wooden block b) length of cylinder e) thickness of specimen provided 2. Given: density of wood 0.8 gm/cc density of aluminum 2.70 gm/cc thickness of specimen 0.17 mm a) Determine the percent of error of the density of wood b) Determine the percent of error of the density of aluminum c) Determine the percent of error of the thickness of the specimen d) Which of these measurements was most...
When solving a problem it is important to identify your given and needed units, but it is also important to understand the relationship between those units so you will know how to set up your equation in order to solve the problem Review the data sets below and use the steps of the problem-solving method to determine whether the given measurements would be appropriate for calculating mass, volume, or density Drag the appropriate data sets to their respective bins. ►...
Given the data below for sample vertical deformation versus time for a load step of a consolidation test, determine the value of the coefficient of consolidation in units of cm2/sec. The sample has a height of 2.2 cm at a time corresponding to t50o. 3.8 4.2 4.4 4.6 4.8 5 5.2 5.4 1000 0.1 1 10 100 10000 Time (min) Deformation (mm) LO
7 Consider the following reaction at 298 K: NH3(g) +HCI(g)NH4CI(s) Using the thermochemical data at 298 K given below (a) Determine the AH for the reaction. (2 marks) (b) Determine the AG for the reaction and comment on its value. (3 marks) (c) Determine the maximum work done available in the reaction. (3 marks) An equilibrium mixture, consisting of 0.5 atm of NHy(), 0.5 atm of HCKg) and excessive of NH Cl(s), is enclosed in a container at 298 K...
QUESTION 1 A semi-crystalline nylon with a degree of crystallinity of 25% has a density of 1.5 g/cm^3. Nylon has a crystalline density of 1.8 g/cm^3. What is its amorphous density in grams per centimeters cubed? 1 points QUESTION 2 Which defect is NOT common between metals and polymers? tie molecules vacancies screw dislocations interstitial defects 0.5 points QUESTION 3 Which one is not a characteristic of a plastic polymer? a. Low stress but very large strains b. Tensile strength...
A hydrometer is an instrument used to determine liquid density. A simple one is sketched in the figure below. The bulb of a syringe is squeezed and released to let the atmosphere lift a sample of the liquid of interest into a tube containing a calibrated rod of known density. The rod, of length L and average density rho_0, floats partially immersed in the liquid of density rho. A length h of the rod protrudes above the surface of the...