W). ass, (c) temperature change on the amount of heat (q) gained or lost by a substance. Explain your ideas in at least three (3) sentences. Point form is both accepted and expected for this question. Heat (J) Mass (g) Heat Capacity (J/g °C) Final Temperature (°C) Initial Temperature (°C) 50.0 4.18 (water) 25.0 15.0 418 4.18 (water) 25.0 15.0 44.4 10.0 0.444 (iron) 15.0 10.0 0.444 (iron) 45.0 15.0

W). ass, (c) temperature change on the amount of heat (q) gained or lost by a substance. Explain your ideas in at least three (3) sentences. Point form is both accepted and expected for this question. Heat (J) Mass (g) Heat Capacity (J/g °C) Final Temperature (°C) Initial Temperature (°C) 50.0 4.18 (water) 25.0 15.0 418 4.18 (water) 25.0 15.0 44.4 10.0 0.444 (iron) 15.0 10.0 0.444 (iron) 45.0 15.0

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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5 # 3 ALEKS-Courtney W x New Iab 5oog-ajce 3pouad + x www.awu.aleks. com alekscgi/x/1sl.exe/1o_u-igNsikr7,8P3)H-lijulplKKWv4bwenmyrLYOBHDAAsJtmzj53GErnx_viTdHblGMF9jvgkSu_nrizREmdQXHPJbMzq0mOrXJcuonZITQh866q?1oBw7Qv)bay O CHEMICAL REACTIONS Percent yield of chemical reactions Courtney V SE OO OOC Gaseous ethane (CH,CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,) and gaseous water (H,0). If 3.59 g of water is produced from the reaction of 5.71 g of ethane and 37.5 g of oxygen gas, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it. Explanation Check O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use l Privacy Center Accessibility 2 6. 4. 081 09 un alt alt
i) Br 3 H3C, .../IC/ CH3 CH3S Acetone CH₂CH₂OH heat ion between
← → C = www-awa.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-lvgXwPgmUhvlTCeeBZbufuBYTI0Hz7m 7D3Zc3-ha0PfzcwecOQ-Z3dKGLCmIn-Wf2EOmT65eVr9icA... OSTATES OF MATTER Using the combined gas law 84°F Sunny For many purposes we can treat propane (C3Hg): as an ideal gas at temperatures above its boiling point of -42. °C. Suppose the temperature of a sample of propane gas is lowered from 24.0 °C to -12.0 °C, and at the same time the pressure is changed. If the initial pressure was 0.62 kPa and the volume increased by 40.0%, what is the final pressure? Round your answer to 2 significant digits. kPa Explanation Check - ▬▬ 0 10 X 0/5 Q Search © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |
Q1. (a) In each of the following cases (I. to III.) identify which polymer in each pair has the greatest Tg and then explain your selection in terms of molecular structures. Assume that molecular weight differences are insignificant. Note: PMV = pendant molar volume/ cm³/mol Pair I Section A Answer ALL questions in this Section Pair II Pair III Polymer 1 H₂ +²2² 0+. Repeat unit A ht Polymer 3 (PMV=92.3) 3 Polymer 5 (PMV-60.1) tyt OC-CH₂ Polymer 2 | to-0²-0-0 H₂ + -ot Polymer 4 (143.9) (b) Consider the following repeat units A and B, state which polymer is likely to be amorphous and which is likely to be semi-crystalline then explain why in terms of the structure of the repeating units. to *** Polymer 6 (PMV=70.3) Repeat unit B t
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Polymeric composite materials can be obtained by adding fillers in the form of particles or fibers in a polymeric matrix and are intended to form a new material with properties different from those of pure components. Regarding polymeric composites, review the statements below and check which is true and which is false. (I) The mechanical properties of a fiber reinforced polymer composite are not influenced by fiber length. (II) Composites with unidirectional continuous fibers have isotropic mechanical properties. (III) The interfacial adhesion between matrix and dispersed phase does not influence the magnitude of the final mechanical properties of the composite. (IV) In polymeric composites, fibers are normally less ductile than polymeric matrices. (V) The specific area of a material at the nanoscale is significantly less than the specific area of the same material at the microscale.
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to Johnston Commun X Rh Blackboard Collaborate Ultra - x > General Psychology-Fall 2021 A ALEKS - Griffin Barden - Learn + A www-awa.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IJczzdcvSCzsqTCIDqNGV3bKqhMfPmUcQ4ENkmiXn9QCwgeDPDkQ06yszYWESPcekwLO-Qg619rekU7404HgFAGbEZa Dr080?1 oBw7QYjlbavbSPXtx-YCjsh_7mMmrq#item O THERMOCHEMISTRY Griffin Calculating a molar heat of reaction from formation enthalpies Using the table of standard formation enthalpies that you'll find under the ALEKS Data tab, calculate the reaction enthalpy of this reaction under standard conditions: 2C,H;(g)+70,(9)→4 CO,(g)+6H,O() Round your answer to the nearest kJ.
How did the change of stress (adding or removing reactants or products) cause a shift in the equilibrium system of the solutions (in which direction) use an example. Use trial one as an example
Moore 5e_C OWLV2 | Onli X Q ☆ * CE w.com/ilrn/takeAssignment/takeCovalentActivity... [Review Topics] [References] isms ots 2req Use the References to access important values if needed for this question. In a study of the conversion of methyl isonitrile to acetonitrile in the gas phase at 250 °C Visited 1 pts 2req CH3NC(g)- >CH3CN(g) 1 pts 2req the concentration of CH NC was followed as a function of time. It was found that a graph of In[CH3NC] versus time in seconds gave a 1 pts 2req straight line with a slope of -3.96x10-3 s and a y-intercept 52. 1 pts 2req Based on this plot, the reaction is v order in CH,NC and the rate constant for the reaction is 1 pts 2reg 1 pts 2reg 1 pts 2reg Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Support 52% 1:41 PM 1/22/2021
Phase change properties of pure substances Cu C6H12 C (C6H5CH₂)₂0 (CH3CH₂)20 CH3CH₂OH (CH₂OH)2 NH₂COH Au C C6H14 H₂ copper cyclohexane diamond dibenzyl ether diethyl ether ethanol ethylene glycol formamide gold graphite hexane hydrogen 1084.62 6.7 4440 1.8 -116.22 -114.14 -13.0 2.57 1064.18 4489 -95.27 -259.16 2560 80.7 298 34.4 78.24 197.5 217 2836 3825 68.72 -252.879 0.385 1.841 0.51 2.369 2.438 2.394 2.389 0.129 0.709 2.27 14.304 13.26 2.68 -- 7.19 4.931 9.96 8.44 12.55 117.4 13.08 0.12 29.97 45.6 26.52 38.56 50.5 60.2 324 28.85 0.9 280.3 193.7 242 446 -- 234.4 -240.212 40.2 35.9 61.7 80 29.9 12.69
Polyethylene terephthalate is an example of synthetic material in Materials and Engineering. 1. Describe the relation of its building blocks in connection to its “bulk” (materials) properties. (No need for essay, just a brief scientific explaination!) If you may, please send link as well of the reference that you use for the answer).