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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Z is a fictional element and Z₂ is a fictional diatomic molecule. Predict the sign of the enthalpy change (AH) for the following reaction: Z₂ (g) → 2Z (g) Negative Positive Zero
Using Hess law, compute the thermochemical equation to know the total heat of RXN. C,H. (g) + H2 (g) → C,H« (g) AH = ? C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H¿O (I) C>Ho (g) + 3 ½ 0; (g) → 2 CO2 (g) + 3 H;O (1I) H2 (g) + ½ O> (g) → H;O (1). AH-- 1411.0 kJ AH = -1560.0 kJ AH = -285,8 kJ a. -3216.8 kJ b. -136.8 kJ c. 3216 kJ d. -136.8 J
||| Solving a basic calorimetry problem A sample of polystyrene, which has a specific heat capacity of 1.880 J.g¹.C¹, is put into a calorimeter (see sketch at right) that insulated contains 200.0 g of water. The polystyrene sample starts off at 92.7 °C and the temperature of the water starts off at 15.0 °C. When the temperature of the water stops changing it's 23.1 °C. The pressure remains constant at 1 atm. container Calculate the mass of the polystyrene sample. Be sure your answer is rounded to 2 significant digits. Me g x10 X thermometer. 5 water sample a calorimeter
223 Calculate the change internal 122 energy (AU) for a system that is 223 giving off 45.0 kJ of heat and is doing 800 J of work on the surroundings? 22358 235808029 122 O A) 45.8 2235808029 12235808029 122 B) -45.8 22808029 12235808029 122 C) -755 2280e020 12235808029 122 -845 2280a02 12235808029 122 2288029 12235808029 122
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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
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)
Where did you get the specific heat capacity Al = 0.89 ?
why is heat a path function when enthalpy is a state function? ( H = q + w)
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
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?

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