{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

C112H S10 T1 - can sue ‘Ti nremetlglolng l A calorimeter...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: can sue ‘Ti nremetlglolng l. A calorimeter is constructed of 600 grams of glass (c3 = 0.75 J/g C) and it contains 300 grams toluene (cs = 2.24 Jig C). The initial temperature of the calorimeter (both glass and toluene together) is 25.00000 C. If 60 J of heat is added to the calorimeter calculate the final temperature of the calorimeter (both glass and toluene together) assuming no heat is losttothesurroundings. 25°C,” - , “(000 0.7. AT Mamba-2“ (00: L190 an Al" 0-1333 - (Boo) (2.2%)(0436'53s Q Q =8q.577b - 2 5. l 333) W m ‘°‘°§%‘Z'S%§$°c E); e heat capacity of Uranium is 0.12? J/g C and the heat capacity of water is 4.184 Jig "f .s.300gran1Ucontrolrod311000C1stobecooledby:n g H 3’: u _ ofI-IZO tan ‘ finaltemperature of U and H20 combined. £1151 U 0%ng H20 C: 2 9 c, .y _ '"(faooxoazsfi-AVG —» (beacon s>cx-\00®_= 0 (500mm) M = Q a (500)(4.Is®(x - 25) “Q 5 AT= (somehow (04259193303: zoqQM want ”3 3. The enthalpy of formation of PC13 (l) is -319.1l kJ/mol and PC15 (s) is 443.5 kJ/mol. I The atomic mass of P is 31 g/mol and Cl is 35.5 g/mol. If0.2468 gramgClkis reacted ' according to PC13(1) + Clg(g) —) PC15 (s) how much heat will be evolved to the .WKO ROSiM surroundmg' s? PClz, + 02—9 PCP; 4: ””1435” 11k} , . 'BIQOIIJ Eb 031 3‘slmumts "(if hm" " 1-H 3. 5" . 2 1'” l X [061(3- (ism-.313??? astronazozq . - r0.0on 0.2%3 0.001106 /3 Awqgswquleof 7 m. S . 3M, sH-c I'LQ-C ‘ tiff—C 4. Chbane, C3113, has a structure with the eight C atoms at the comers of a cube and one H atom on each C atom. Given the enthalpy of the reaction shown below is -820 . [mol and that the C-H bond is 343 kJ/mol and the co bond is 413 kJ/mol calculate . bondstrength: . it] p __ gr. @5055 —> 1\ c-ac —> a fin: 8 H—C = 3% ”l D2 (m) t 80433] ‘Qfflsq‘a? + x] [Hq5b t- 219% - 21%‘4-‘4‘! = ‘820 71H®“+.2"IBH”H‘X =‘ ”820 qu‘flbfi-HX‘ 87.0 ——e ”D” X= NHL} . 5. Fuel dragsters bum nitromethane according to the eqn. below: i W‘ I“—‘—"r—’—. ““I 2CH3N02 (1) + 3%» 2 c02(g) +3 H20(g)+M) : ‘Hl‘KEé. O 0 not Ifthe enthalpy of the above reaction is -l418 kJ/mol and the enthalpy of forniation of C02 (g) is 693.5 kJ/mol and H20 (3) is -241.8 kJ/mol calculate the standard enthalpy of formation of CH3N02. M0] flats-gr 2(—3qa5)+ 362413) *5}- .. ":81 + ”125% ' 2x '- “\5\2.H-2«X‘-H‘% -—2:tt=th.‘-i }- .151 x 1-H mm ‘5'77 (0 6. In the space below write a balanced chemical equation which, if you could measure it, would give you directly the enthalpy of formation of sucrose: C12H120n (solid). :26", 6H2 +—;'OZ —). CIZHIZO“ "5-1." W?”‘*‘ .... . . .. .r . . . . .. . . _ ... .. . .__ III-“WM," .‘,_:... _,_, . - .= |-' W 7. Given the enthalpies of the first four reactions, calculate the enthalpy the fifih: — 4020 kJ/mol -- <3 OI-l O- - 620 kJ/mol " I"), Ll O - 240 kJ/mol h' L‘ (a — 2300 kJ/mol 2. 5 (p 00 ????? kJ/mol H 31 2% L3H CLC' H ‘L 3H7.” 302594;“129!) 8. One form of selenium, Sea, is a closed ring of eight selenium atom-gm eight Se-Se single bonds. Given the bond dissociation enthalpies: O=O 495 kamol and Se—Se 145 kJ/mol and that the Se=__Q_ bond strength' 1;; 320 kJ/mol calculate the enthalpy of the reaction shown below: Sex + 4 O=O -—-—) BSe=O AI-I°= ???? kJ/mol 9. For the following events, indicate whether the reaction should be endothermic (endo), exothermic (exo), or nearly thennoneutral (neut). Think about them carefully and Circle only one answer for each. a. Hg (gas) -—-> Hg (liq) . endo 11th b. I-Ig2(gas) +2 Hg(gas) 3 cm Icndo' neat endo neut d. Cl-Hg-Cl(g) + I-Hg—I(g) —> 2 Cl- -Hg-I(g) . endo ‘ Erdo" pus-9 b'm'tbomls EKG-3 neg-3 mm bond-$- c. Hg(liq) —> Hg (solid) 3. Which of the following is the correct unit for measuring pressure ? (circle one answer only) ' N—M3 N.M2 - NJQ @ N-M" . N—M's b. Which of the following is the correct unit for measuring work ? N F .5 ‘D (circle one answer on 'u c. First law of thermodynamics. E. hers” re mains constan t “m Jdue, universe ~~ "‘5 - e H8 (1 closed system‘) ‘ property or fimctiton. 6. Silicon and carbon are in the same row and both C02 and SiO; are stable compounds. Why are the properties of these two Compounds so different. Explain briefly and sketch the two ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern