## Answers

0 Reaction (a) Mg = 0.5 g x 1 mole F 24.30 g = 0.0205 mole (b) Head absorbed by solution V= (s.h) solution * (me>>) Sojution X (17) solutia 3.1.0 (code x 100 () x 2 260) Tu solution 2200 cal T = 2.200 kcal) zo

(c) Hoi LAH a reaction reaction (ll- enou I kcal - x x 1000 Cal gram Mg ato atomic mass M2 1 male - - 2200, Cal 1 klal 24.30,2 0.5 g 1000 cal 3 Cal į mole = -106.92 Ko reactional AULO or are than reaction is exothermic

| Reaction (2) 1a Mgo = 1:0g x 1 mole 4o.30,g =0.0248 mole (b) as solletion ” a solution = (sh) solution X (mass) solution X(97) solution - 476 * 1 (%x 3 (*) Vsolution = 300 cal

(c) (on). reaction, 8*(2) Vreaction & 1 kcal & gram Myo 100o Cal Molar masy Mgo .

I mole 2-300 Cal x 1 kcal x o 16oo cal - 40.30 g 1 mole (000 cal Svet2 (AH) (D ) reaction (2) = -12.02 kcal/meie (A) reaction (21 co or are so reaction is exothermic (A) reactional theoreticed = -11 kcal/mole % еко- 2 theoreticada experimental i theoretical s (-iai) - (-106- x 100 = 3.6756%

(AH) eaction as thosutical = -34.9 kcal/more 7 error = 1% error = 1(-34.9)-(-12.02) / xos -34.9 M100 = 65.5587 %

Д а оча) - - (o6 • 32 kla mole Ч. 18ч k1 1 kcal = 447.3532 kJ/moic In reaction (2) = -12.02 kcal Mole 4,184 A] I keed =-50.2916 kJ/mole

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