Question 5 Consider a system of gases that is compressed using 986 J from a piston, while losing 362 J of heat to the su
Posted: Tue Jul 05, 2022 8:58 am
- Question 5 Consider A System Of Gases That Is Compressed Using 986 J From A Piston While Losing 362 J Of Heat To The Su 1 (15.12 KiB) Viewed 17 times
- Question 5 Consider A System Of Gases That Is Compressed Using 986 J From A Piston While Losing 362 J Of Heat To The Su 2 (16.54 KiB) Viewed 17 times
- Question 5 Consider A System Of Gases That Is Compressed Using 986 J From A Piston While Losing 362 J Of Heat To The Su 3 (76.82 KiB) Viewed 17 times
- Question 5 Consider A System Of Gases That Is Compressed Using 986 J From A Piston While Losing 362 J Of Heat To The Su 4 (16.58 KiB) Viewed 17 times
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- Question 5 Consider A System Of Gases That Is Compressed Using 986 J From A Piston While Losing 362 J Of Heat To The Su 6 (47.04 KiB) Viewed 17 times
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- Question 5 Consider A System Of Gases That Is Compressed Using 986 J From A Piston While Losing 362 J Of Heat To The Su 8 (33.72 KiB) Viewed 17 times
Question 6 5p "Hot hands" are small pouches that can be used to warm up your hands when it is cold outside, hence the name. In these pouches, oxygen reacts with a powder to form iron oxide another reactions What conclusion can you draw about this reaction? O No observations about the nature of the action can be made without more information, the the temperature of the power in the packet It is an endothermic reaction, absorbing heat from its surroundings, therefore feeling hot It is an exothermic reaction, absorbing the heat from your hands, therefore feeling het Ois an exothermic reaction, releasing heat to the surroundings
Question 7 Which process is shown in the following enthalpy diagram: H, enthalpy H₂O(g) AH = -40.7 kJ/mol H₂O(1) rxn→> O exothermic; H₂O(g) H₂O(l) + 40.7 kJ O endothermic; H₂O(g) H₂O(l) + 40.7 kJ O endothermic; H₂O(g) +40.7 kJ H₂O(l) O exothermic; H₂O(g) +40.7 kJ> H₂O(l)
Question 8 A system of expanding gases pushes back a piston, while dropping in temperature. What is the sign for the change in energy of this system? Ow> 0.q>0. AE >0 Ow>0,q<0, AE-0 Ow<0,q<0. AE<0 w<0.q>0. AE-0
Question 9 140.0 g of metal at 24.0° C has 632 J of heat added to it. The metal's specific heat is 0.105 Jg¹ °C¹. What is its final temperature? O24.6°C 0 67.0°C 43.0°C O-19.0°C
Question 10 Given the following thermochemical equations, determine the enthalpy of reaction (AHxn) for the reaction: CaHg(s) + 5 O2(g) 3 CO₂(g) + 4H₂O(g) AH = ? (1) 3 C(s) +4 H₂(g) →→→ C3H8(g) (2) C(s) + O₂(g) →→→ CO₂(g) (3) H₂(g) + 1/2O₂(g) -2147.7 kJ O-739.1 kJ O-1640 kJ O-2043.9 kJ H₂O(g) AH-103.8 kJ AH--393.5 kJ AH =-241.8 kJ
Question 11 Which of the following represents the formation equation of CH3CH₂NH2(g)? O CH3CH₂NH2(g) 2 C(gr) + 7/2 H2(g) + 1/2 N2(g) O 2 C(s) + 7/2 H₂(g) + 1/2 N₂(g) CH3CH2NH2(g) O2 C(gr) +7 H₂(g) + N2(g) CH3CH₂NH2(8) O2 C(gr) + 7/2 H₂(g) + 1/2 N₂(g) CH3CH₂NH2(g)
Question 12 Given the following tabulated data, calculate the enthalpy of reaction (AHxn) for the combustion of ethane: 2 C2H%(g) +7O,(g) — ) 4 CO,(g) + 6H2O Compound CH(s) O-3459 kJ -764.3 kJ O 3119 k O-1359 kJ C₂H6(s) C₂He(s) CO(g) CO₂(g) H₂O(l) AH, (kJ mol¹) -47.9 -85.0 -103.9 -110.5 -393.5 -285.8 AH?