Homework Answers
1)
When 1 Mol of H2 reacts, heat evolved = 242 KJ
In the given reaction, 2 mol of H2 is reacting.
So, heat evolved = 2*242 KJ = 484 KJ
Since the heat is evolved, sign would be negative
Answer: -484 KJ
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You add 100.0 g of water at 51.0 °C to 100.0 g of ice at 0.00 °C. Some of the ice melts and cools the water to 0.00 °C. When the ice and water mixture reaches thermal equilibrium at 0 °C, how much ice has melted? (The specific heat capacity of liquid water is 4.184 J/g · K. The enthalpy of fusion of ice at 0 °C is 333 J/g.) Mass of ice = References Use the References to access...
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When Na(s) reacts with H2O() according to the following reaction, 184 kJ of energy are evolved for each mole of Na(s) that reacts. Complete the following thermochemical equation. 2Na(s) + 2H20(1)—>2NaOH(aq) + H2(e) AH =
The following information is given for cadmium at latm: To = 765.00°C T. 321.00°C Specific heat solid 0-2300 2 °C Specific heat liquid = 0.2640J/g °C AH (765.00°C) = 889.6 g AH(321.00°C) = 54.40 Jg A 26.40 g sample of liquid cadmium at 389.00°C is poured into a mold and allowed to cool to 21.00°C. How many l of energy are released in this process? (Report the answer as a positive number.) Energy = kJ The following information is given...
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