Ch6answ - 1.A gas in a cylinder of an engine expands by...

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Unformatted text preview: 1.A gas in a cylinder of an engine expands by 500.0 mL against a pressure of 1.20 atm. How much work is done? 2.A balloon is inflated by heating the air inside it. The volume changes from 4.00 x10106 L to 4.50 x10106 L by addition of 1.3 x10108 J of energy as heat. Calculate AE. The balloon expands against 1.0 atm. AE;AU:g-\vw 0231(5me a iOlBLSl W: — B2be3 “('MNXQWMO L><l LAM) : .4751 Xlogjl AV: 1.3 xioga 0.5: XlOg 3. A car engine does 520. kJ of work and loses 220 kJ. of heat. What is the change in energy of the engine? AU :chvv _. ,Z'zolé} —57«O"3 ’- : v1u0M3 4. 50.0 mL of 1.0 M NaOH is mixed with 50.0mL of 1.0 M HCI at 25.0 °C. The temperature of the solution increases to 31.9 °C. What is the total heat released? What is the enthalpy (AH) for the reaction? 'ASWS WM W vowyl HLO f5 loo/w) M M mgkfi l.) [fig/Ml i: ,w1.CP.DT : Q00”! %>(4.l¥4%5>(6 (5‘2) Ci : ‘2 9x'033 DH; him/kg A‘ 1”»? Ame/(N13 ; X103) 3 5. 4A|(s) + 302(9) _—_> 2A|203(s) Aern = -3352 kJ/mol How much heat is released upon reaction of 24.2 9 Al at 250 C and 1 atm? 24.9.3 am w 3114/“ 24-2/3 — OWN/wag MM 6. 802(9) + 02(9) —> 803(9) 2.00 moles 802 are reacted with 1.00 mole 02 at 250 C and 1.00 atm. 198 kJ of energy is released as heat. Calculate AH and AU. ’Bafiww 250mg + 0w» ——> 250505) - M0031 Mme/tam {5 K“ WW P APP—33 -: —162‘? mm AU: DH— Dav % T ¢DH*ADQT w t 1. [My/g 3) IQYN033 _ (21,3)(0-0826X295") ( 47:?“ K4 Chm : ‘ rioTéz An ,3 s - 1637x1033 + 2.1«5xu033 (H M MWW dab/Wye“? . “at .. 2 _ MSYAO’bj an: Zhjasdeény 5 7. CuSO4(aq) + 2NaOH(aq) a Cu(OH)2(s) + Na2804(aq) 50.00 mL of 0.400 M CuSO4 reacts with 50.00 mL of 0.600 M NaOH at 1 atm. The total heat evolved is 1.49 kJ. What is Aern? wwy Wistsst is c97(‘ M WSW? Dklfla —-i.Li3¥-3 ...
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Ch6answ - 1.A gas in a cylinder of an engine expands by...

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