23 Calculate the change in the internal energy (AU) of a gasthat absorbs heat of 140 J from the surrounding and doesan expansion work of 85 J on the surrounding.235808029 12235808029 1222O A)8-550 kJ 12235808029 122B) +55J 12235808029 122O C)S 455 kJ 12235808029 122O D55 R 12235808029 1222 12235808029 12223588550||O E)2.2.

Answered: Calculate the change in the internal…

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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3. Calculate the heat of formation of methane (CH4) The equation involved is C (s) + 2 H2 (g) → CH4 (g) ΔΗ -? The thermochemical equations for the combustion of these species are; а. CHa (g) + 2 02 (g) —> СО2 (g) + 2H20 (1) b. 2 H2 (g) + О2 (g) —> 2H20 (1) с. С (s) + О2 (g) —> СО2 (g) AH = - 890.4 kJ AH = - 571.5 kJ AH = - 393.7 kJ
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and 2 Enthalpy #1.30 enoindice pled TT 2010 2D49.bs 22) When 1 mole of Fe2O3(s) reacts with H₂(g) to form Fe(s) and H2O(g) according to the following equation, 98.8 kJ of energy are absorbed. (6 Fe2O3(s) + 3 H2(g) → 2 Fe(s) + 3 H₂O(g) (pp) (20/d4 (pm) $40 D Reaclanis 13:48 SH Products endothermic, A endothermic, B (2) exothermic, A exothermic, B nad W (21 Enthalpy MOMS. Reactants Products (A) (B) Is the reaction endothermic or exothermic, and which of the enthalpy diagrams above represents grow olor and to noin (01 this reaction? SH GH TH A HOMH X HILD 08.10 Page 6 of 8
Use standard heats of formation to calculate the change in enthalpy for the following reactions: a. 2C(s,graphite) + O2(g) → 2CO(g) b. 2H2O2(l) → 2H2O(l) + O2(g) c. 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)
2.Use standard enthalpies of formation from Table 1 to determine the standard enthalpy changes in the following reactions: a. C3H8(g) + H2(g) b. 2 H2S(g) + 302(g) -→ C;H«(g) + CH4(g) -→ 2 SO2(g) + 2 H2O(1) 2 A 1 c20 IL (e)
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Calcium acetate, Ca(CH3COO)2 has a molar mass of 158.17 g/mol. In a constant pressure calorimeter, 44.2 g of Ca(CH3COO)2 is dissolved in 861g of water at 25.00 °C. The heat produced by the solution was determined to be 15kJ. What is the final temperature of the solution? q= - msAT SH20 = 4.184 29.0 °C O 18.4 °C O 64.6 °C O 33.8 °C O 3.96 °C O 21.0 °C
Reaction: Combustion of H2 with excess O2 mass = 2.4 g delta T = 1.2 oC heat capacity of bomb calorimeter = 12.1 kJ/ oC what is qrxn and delta Erxn?
uestion 22 of 41 > If a system has 225 kcal of work done to it, and releases 5.00 × 10² kJ of heat into its surroundings, what is the change in internal energy (AE or AU) of the system? kJ AE = étv MacBook Air DII 80 888 F12 F10 F11 F7 FB F9
2- Calculate the total internal energy change (AU) for a system that loses 50 J of heat and gains 150 J of work performed on it by the surroundings.
Reaction: Combustion of CH4 with excess O2 mass = 1.6 g delta T = 1.3 oC heat capacity of bomb calorimeter = 11.3 kJ/ oC what is qrxn and delta Erxn?
A chemical reaction is run in which 172 Joules of heat are generated and 426 Joules of work are done on the system. Calculate the change in the internal energy of the chemical system. ΔΕΞ Joules Submit Answer Heat and Work - First Law: This is group attempt 1 of 10

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