Question

56 )The dissolution of CaCl2,(s) in water is exothermic, with a Hun
-81.3 kJ/mol. If you were to prepare a 1.00 m solution of CaCl2
beginning with water at 25.0°C, what would the final tempera-
ture of the solution be in °C? Assume that the specific heats of
both pure H2O and the solution are the same, 4.18 J/(Kg).
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Answer 1

Answer:

Step-by-step explanation:

In the nineteenth century, railwaytunnels were blasted through theRocky Mountains to connect BritishColumbia with the rest of Canada.Workers used nitroglycerin to blastthrough the rock. This compound is so unstable, however, that accidentswere frequent and many workers died.Alfred B. Nobel found a way to stabi-lize nitroglycerin, and make it safer to use, when he invented dynamite.What makes nitroglycerin such adangerous substance? Nitroglycerin,C3H5(NO3)3(), gives off a large amountof energy when it decomposes. In fact,about 1500 kJ of energy is released forevery mole of nitroglycerin that reacts.The fast, exothermic decomposition of nitroglycerin is accompanied by atremendous shock wave, which iscaused by the expansion of thegaseous products: nitrogen, oxygen,water, and carbon dioxide. Due to the great instability of nitroglycerin,simply jarring or shaking a containerof nitroglycerin can initiate the decomposition reaction