2:42 PM Mon Jan 30 Question 17 of 20 If a particular liquid has a normal boiling point of 338.0 K and a vapor pressure of 75.0 mmHg at 285.0 K, determine AHvap for the liquid. 1 4 7
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- Calculate the wirk done in Joules when 3 moles of water vaporize at 1.0 atm and 100ºC. Assmune the colume of liquid water is negligible compared with that of steam at 100ºC, and ideal gas behavoir. R= 0.0821 Latm/molK.The sublimation point of CO2 (solid) at 1 atm is -78.37oC and the enthalpy of sublimation(solid to vapor) is 3116 joule/mole. cp (CO2(solid))=50 joule/mole.K. and for cp CO2(g) lookat Appendix.5 gram CO2 gasis held at T=300/X oK in container for some times as represented below:CO2 (gas) at ToK ==➔Dry Ice (Solid CO2) at ToKCalculate:a) The enthalpy of deposition at ToKb) The entropy of deposition at ToK.c) The entropy change of surroundings at ToK. Assume surroundings behavereversibly. Surrounding temperature is ToKd) Entropy change and entropy produced of universe.e) Is this deposition process spontaneous? prove! At given temperature T. x=4.5How much heat is required to heat 1 mole of cold water from 20.0 oC to convert it to steam at 110oC? Use the information provided here and show some work for full credit: Cp(H2O liquid) = 4.187 J/g-oC Cp(H2O vapor) = 1.996 J/g-oC deltaHmelting = 334 kJ/kg deltaHvapor= 2256 kJ/kg
- A shop-vac is capable of pulling in air at a rate of 210 ft^3/min. What is the rate of the vacuum’s air flow in L/s?Formula: C3H6OMelting Point: -94.0°CBoiling Point: 56.0°CDensity of liquid: 0.791 g/mLHeat of Fusion: 98.14 J/gHeat of vaporization: 538.9 J/gSpecific heat capacity (solid): 1.653 J/g°CSpecific heat capacity (liquid): 2.161 J/g°CSpecific heat capacity (gas): 1.291 J/g°C How much heat is involved in taking 165.2 g of acetone from 14.7°C to 52.1°C?What is w when 1.83 kg of H20(1), initially at 25.0 °C, is converted into water vapour at 185 °C against a constant external pressure of 1.00 atm? Assume that the vapour behaves ideally and that the density of liquid water is 1.00 g/ml (Remember to include a+or-sign as appropriate.) Enter your answer in acceptable SI units, accurate to 3. significant figures. Use an acceptable Sl symbol for units.
- Use the Trouton's rule to estimate the normal enthalpy of vaporization of a material that boil at 147 oC and 1 atm. ΔvapH = __________ kJ/mol, 3 sig. fig. double check sign and unit.Hypergolic propellants are fuels and oxidizers which ignite spontaneously on contact with each other.requiring no ignition source, hypergolics are ideal for spacecraft maneuvering systems as they provide an easy start and restart capability. Also, hypergolics do not pose the storage problems of cryogenic propellants (e.g., liquid oxygen and hydrogen) as they remain liquid at normal temperatures. This technology was used on the Apollo 11 Mission 40+ years ago. As part of the testing for a new thruster design, amounts of unsymmetrical dimethyl hydrazine, or UDMH [(CH3)2N-NH2; MW=60.1 g/mol] were reacted with dinitrogen tetroxide [N2O4; MW=92.1 g/mol]. The balanced equation for this reaction is shown below: (CH3)2NNH2(l) + 2 N2O4(g) → 3 N2(g) + 4 H2O(g) + 2 CO2(g) If 300.5 grams of UDMH are consumed in another test and all of the products gases [N2, water vapor and CO2] are collected into a 100.0-Liter container, determine the following: The total number of moles of product gases…Hypergolic propellants are fuels and oxidizers which ignite spontaneously on contact with each other.requiring no ignition source, hypergolics are ideal for spacecraft maneuvering systems as they provide an easy start and restart capability. Also, hypergolics do not pose the storage problems of cryogenic propellants (e.g., liquid oxygen and hydrogen) as they remain liquid at normal temperatures. This technology was used on the Apollo 11 Mission 40+ years ago. As part of the testing for a new thruster design, amounts of unsymmetrical dimethyl hydrazine, or UDMH [(CH3)2N-NH2; MW=60.1 g/mol] were reacted with dinitrogen tetroxide [N2O4; MW=92.1 g/mol]. The balanced equation for this reaction is shown below: (CH3)2NNH2(l) + 2 N2O4(g) → 3 N2(g) + 4 H2O(g) + 2 CO2(g) For one test, 721.2 grams of UDMH was completely consumed. How much dinitrogen tetroxide [in grams] was needed?
- Liquid water can go from 25ºC and 1atm to 35ºC and 1atm in a process for which q < 0. Select one: True FalseA steam of gas at 70oF, 14.3 psia and 50% saturated water vapor is passes through a drying tower where 90% of the water vapor is removed. Calculate the pounds of water removed per 1000 ft3 of entering gas. The vapor pressure of water at 70oF is 0.74 in Hg.Oxygen O2 ,at 200 bar is to be stored in a steelvessel at 20 0 C .The capacity of the vessel is 0.04m3 . Assuming that O2 is a perfect gas .calculate the mass of oxygen that can be stored in the vessel . Thevessel is protected against excessive pressure by a fusible plugwhich will melt if the temperature rises too high .At whattemperature must the plug melt to limit the pressure in the vesselto 240 bar ? .the molar mass of oxygen is 32 Kg/Kmol