Vapor pressure data are given here for acetic acid, CH3COOH. Temperature (°C) Vapor Pressure (mm Hg) 25 50. 75 100. 78.6 165 310.4 537.2 Use the Clausius-Clapeyron equation to calculate the molar enthalpy of vaporization of acetic acid and its normal boiling point. Molar enthalpy = Normal boiling point = kJ/mol K
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- 倒 V OWLV2 | Online teaching and lea X -cnow-owl.cengagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [Review Topics] [References] pts 2req Use the References to access important values if needed for this question. The following information is given for benzene, CH6, at latm: boiling point =80.1 °C HV (80.1 °C) = 30.7 kJ/mol vap pts 2req specific heat liquid = 1.74 J/g°C pts 2req At a pressure of 1 atm, kJ of heat are needed to vaporize a 41.4 g sample of liquid benzene at its pts 2req normal boiling point of 80.1 °C. 1 pts 2req Submit Answer Retry Entire Group 4 more group attempts remaining 1 pts 2req 1 pts 2req 1 pts 2req 1 pts 2req 1 pts 2req sid 国Calculate the solubility of nitrogen in water at an atmospheric pressure of 0.390 atm (a typical value at high altitude).Atmospheric Gas Mole Fraction kH mol/(L*atm)N2 7.81 x 10-1 6.70 x 10-4O2 2.10 x 10-1 1.30 x 10-3Ar 9.34 x 10-3 1.40 x 10-3CO2 3.33 x 10-4 3.50 x 10-2CH4 2.00 x 10-6 1.40 x 10-3H2 5.00 x 10-7 7.80 x 10-4Calculate the solubility of nitrogen in water at an atmospheric pressure of 0.380 atm (a typical value at high altitude). Atmospheric Gas Mole Fraction kH mol/(L*atm) N2 7.81 x 10-1 6.70 x 10-4 O2 2.10 x 10-1 1.30 x 10-3 Ar 9.34 x 10-3 1.40 x 10-3 CO2 3.33 x 10-4 3.50 x 10-2 CH4 2.00 x 10-6 1.40 x 10-3 H2 5.00 x 10-7 7.80 x 10-4 M
- ng and lear X O water treatment systems - Forkly X akeAssignment/takeCovalentActivity.do?locator=assignment-take [Review Topica] [References] Use the References to access important values if needed for this question. The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it. The vapor pressure of diethyl ether , CH3CH,0CH,CH3, is 463.57 mm Hg at 25 °C. In a laboratory experiment, students synthesized a new compound and found that when 5.823 grams of the compound were dissolved in 156.3 grams of diethyl ether, the vapor pressure of the solution was 456.57 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight of this compound? diethyl ether =CH,CH,OCH,CH3= 74.12 g/mol. MW g/mol Submit Answer Retry Entire Group 9 more group attempts remaining ed 8:43 PM 11/17/202 Q大 立 团 %24 E. %# M 个 Bb Course Content - 2021FA-CHM- X OWLV2 | Online teaching and lea X OWLV2 | Online teaching and lea X Choose the substance with th Ô https://prod01-cnow-owl.cengagenow.com/ilrn/takeAssignment/takeCXPCompliantActivity.do?locator=assignment-take CHAPTER 9 - LIQUIDS, SOLIDS, AND MATERIALS O Previous Page 10 of 17E Next O References Use the References to access important values if needed for this question. Copper has a density of 8.92 g/mL. Calculate the radius of a Cu atom expected if copper crystallizes in the face-centered cubic structure. wd 8 O O 663 pm O 320 pm O 104 pm F2 F3 F4 F5 F7 F8 %24 4. %23 6. 6. 2. 5.10-44 Determine the liquidus temperature, soli- dus temperature, and freezing range for the following NiO-MgO ceramic compositions: (a) NiO-30 mol% MgO; (b) NiO-45 mol% MgO; (c) NiO-60 mol% MgO; and (d) NiO-85 mol% MgO. [See Figure 10-8(b).] 2800 2600 2400 L+S 2200 (Ni, Mg)O 2000, 'NiO 20 40 60 80 MgO Mole percent Mg0 (b) Figure 10-8(b) The equilibrium phase diagram for the NiO-MgO system. (Repeated for Problems 10-44, 10-50, 10-53, 10-57, and 10-71.) Temperature (°C)
- bOn average, would Earth be wa success -Fing x Course Home X + HSS Website openvellum.ecollege.com/course.html?courseld=155561588HeplD=6b9f9b2f... 2 01 0[Review Topics] [References] Use the References to access important values if needed for this question. The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin Calculate the vapor pressure of the solution at 25 °C when 13.39 grams of saccharin, C-H5NO3S (183.2 g/mol), are dissolved in 204.9 grams of ethanol. ethanol = CH3CH,OH = 46.07 g/mol. VP(solution) mm Hg Submit Answer Retry Entire Group 9 more group attempts remainingARecuvalentActivity.do?locator=assignment-take O Other Bod [References] Use the References to access important values if needed for this question. 900 800 Carbon disulfide 700 600 Methanol 500 Ethanol 400 Heptane 300 200 100 10 20 30 40 50 60 70 80 90 100 110 Temperature (°C) The vapor pressure of diethyl ether is 400 mm Hg at 18.0 °C. From the plot of vapor pressures vs temperature above, estimate the temperature at °C which the vapor pressure of ethanol is 400 mm Hg. than the heat of vaporization of ethanol. The heat of vaporization of diethyl ether would be expected to be larger 2 item attempts remaining Submit Answer Try Another Version smaller Previnus Next 3:49 PM 5/5/2022 SONY Vapor pressure (mm Hg)It has been observed experimentally that the AHpolution for methanol as solvent and dimethylsulfoxide (DMSO) as solute is negative. The structures of these compounds are given below. H. H A H3C "CH3 DMSO (dimethylsulfoxide) Methanol Please answer these questions in order to explain this fact: What IMFS are there between methanol molecules and other methanol molecules? Draw a diagram. What IMFS are there between DMSO molecules and other DMSO molecules? What IMFS are there between methanol molecules and DMSO molecules? Draw a diagram. If AHsolution for dissolving DMSO in methanol is negative, what does this say about the energy released in mixing methanol and DMSO molecules (AHmixing) as compared to the energy required in separating solute molecules from each other (AHsolute) and separating solvent molecules from each other (AHsolvent)? 26One of the possible consequences of climate change is anincrease in the temperature of ocean water. The oceansserve as a “sink” for CO2 by dissolving large amounts of it.(a) The figure below shows the solubility of CO2 in water as a function of temperature. Does CO2 behave more or lesssimilarly to other gases in this respect?(b) What are the implications of this figure for the problemof climate change?The Henry’s law constant for CO2 in water at 25 °C is3.1x 10-2 M atm-1. (a) What is the solubility of CO2 inwater at this temperature if the solution is in contact withair at normal atmospheric pressure? (b) Assume that all ofthis CO2 is in the form of H2CO3 produced by the reactionbetween CO2 and H2O:CO2(aq) + H2O(l)------>H2CO3(aq)What is the pH of this solution?SEE MORE QUESTIONS