The article "Enthalpies and Entropies of Transfer of Electrolytes and Ions from Water toMixed Aqueous Organic Solvents" (G. Hefter, Y. Marcus, and W. Waghorne, ChemicalReviews, 2002:2773–2836) presents measurements of entropy and enthalpy changes formany salts under a variety of conditions. The following table presents the results forentropies of transfer (in J/K · mol) from water to water + methanol of NaCl (table salt) overa range of concentrations of methanol:Concentration (%)Entropy510-120-730-1740-2850-3960-5270-6580-8090-98100-121Fit polynomial models of degrees 1, 2, and 3 to predict the entropy (y) from theconcentration (x).a.b.Which degree polynomial is the most appropriate? Explain.Using the most appropriate model, find 99% confidence intervals for the coefficients.C.

Enter the given data in EXCEL sheet and create the variables x2 and x3 as shown below:

Answered: The article "Enthalpies and Entropies…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An article in the Journal of the American Ceramic Society, "Rapid Hot-Pressing of Ultrafine PSZ Powders" (1991, Vol. 74, pp. 1547-1553) considered the microstructure of the ultrafine powder of partially stabilized zirconia as a function of temperature. The data are shown below: ... x = Temperature (°C) | 1100 1200 1300 1100 1500 1200 1300 y - Porosity (%) 30.8 19.2 6 13.5 11.4 7.7 3.6 Find an estimate of o2 Input answers up to two decimal places. o2= Blank 1
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