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I currently have to do a powerpoint presentation on something currently happening in the world at this moment in time. Give me topics i can expand on and give a good presentation.

Consider the dissolution of CaCl2. CaCl2(s) Ca2+(aq) + 2 Cl-(aq) ΔH = -81.5 kJ A 12.2-g sample of CaCl2 is dissolved in 139 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a...