For the reaction CH4(g) + H2O(g)3H2(g) + CO(g) H° = 206 kJ and S° = 215 J/K G° for this reaction would be negative at temperatures (above, below)______________________ fill in the blank 1 K. Enter above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.

For the reaction CH4(g) + H2O(g)3H2(g) + CO(g) H° = 206 kJ and S° = 215 J/K G° for this reaction would be negative at temperatures (above, below)______________________ fill in the blank 1 K. Enter above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter10: Entropy And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 10.86PAE: The enthalpy of vaporization for water is 40.65 kJ mol-1. As a design engineer for a project in a...

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A wad of steel wool (specific heat=0.45J/gC) at 25C is misplaced in a microwave oven, which later is accidentally turned on high. The oven generates microwaves of 13.5 cm wavelength at the rate of 925 moles of those photons per second. All of the photons are converted to high-heat energy, raising the temperature of the steel wool. Steel wool reacts explosively with the oxygen in the oven when the steel wool reaches 400.0C. If the steel wool explodes after 1.55 seconds, how many grams of steel wool were accidentally put into the oven?
The enthalpy of vaporization for water is 40.65 kJ mol-1. As a design engineer for a project in a desert climate, you are exploring the option of using evaporative cooling. (a) If the air has an average volumetric heat capacity of 0.00130 J cm-3 K-1, what is the minimum mass of water that would need to evaporate in order to cool a 5 m? 5 m room with a 3 m ceiling by 5°F using this method? (b) Is this a spontaneous or nonspontaneous process?
The following reaction enthalpies can be measured: C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘=−1411.83 kJ C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l) ΔH∘=−1367.68 kJ Find the enthalpy change when 9.55 kg of ethylene, C2H4(g), react with an excess of H2O(l)H2O(l) to produce ethanol, C2H5OH(l).
The value of AH° for the reaction below is -6535 kJ. ob kJ of heat are released in the combustion of 16.0 g of C6H6 (1)? MM C6H6 = 78.12 g/mol 2C6H6 (1) + 1502 (g) → 12CO2 (g) + 6H₂O (1) 1 A) 669 SHAHB)-6535 C) 1.34 x 103 D) 5.23 x 104 E) 2.68 x 103 Only typed solution.
For the reactionN2(g) + O2(g)2NO(g)H° = 181 kJ and S° = 24.9 J/KG° would be negative at temperatures (above, below) fill in the blank 1 K.Enter above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.
For the Bunsen burner reaction, CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) ΔH = - 819.5 kJ How much energy (in kJ) is associated with the reaction of burning 5.00 g of CH4 with 9.00 g O2? (Hint: this is a limiting reactant problem)
Consider the following rection: 2 A(g) + B2(g) ⇌ 2 AB(s) ΔG° = -166.1 kJ Calculate ΔGrxn (kJ) for the reaction at 77.6 oC by using the partial pressures given below. (R=8.314 J/molK) PB2 = 0.344 atm, PA = 0.337 atm Report your answer with one decimal. Enter numbers only; do not enter units.
For the reactionFe2O3(s) + 3H2(g)2Fe(s) + 3H2O(g)H° = 98.8 kJ and S° = 143 J/KG° for this reaction would be negative at temperatures (above, below) __________K.Enter above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.
Which statement best describes the reaction TiCl4(l) + 2H2O(l) --> TiO2(s) + 4HCl(aq) at a low temperature of 25 °C that has ∆H°= -288 kJ and ∆S°= - 85.4 J? The reaction is nonspontaneous. Heat is absorbed during the reaction. Products formation results in increased disorder. The reaction occurs spontaneously.
Nitromethane, CH3N02, can be used as a fuel. When the liquid is burned, the (unbalanced) reaction is mainly CH3NO2(l) + O2 (g) → CO2 (g) +N2 (g) + H2O(g) a.The standard enthalpy charuge of reaction (ΔH°van ) for the balanced reaction (with lowest whole·number coefficients) is -1288.5kJ. Calculate ΔH°f for nitromethane.b. A 15.0·L flask containing a sample of nitromethane is filled with O2 and the flask is heated to 100.0°C.At thistemperature, and after the reaction is complete, the total pressure of all the gases inside the flask is 950.torr. Ifthe mone fraction of nitrogen (Znitrogen) is 0.134 after the reaction is complete, what mass of nitrogen was produced?
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I need help with this problem. I get -1.4 kJ using qrxn = -(mcsdeltaT) 20. The chemical equation for the reaction between hydrochloric acid and sodium hydroxide is HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l) When 25 mL of 1.0 M HCl (36.5 g/mol) is mixed with 25 mL of 1.0 M NaOH (40 g/mol), the temperature change of the mixture is 6.9 oC. The density of the mixture is 1.00 g/mL and the specific heat of the solution is 4.18 J/ g oC. What is the enthalpy change for this reaction? a. -1.4 kJ b. -29 kJ c. 29 kJ d. -58 kJ