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Alex Le

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When 0.917 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 3.76C is observed.Assume the solution's
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200.0 x 4.184 x 10.7 x (1/1000)and divided by (0.655/40.078) and obtained 547.86075 which rounds to 548 kJ/mol to 3 s.f. (the 0.655 g has only 3 s.f. unless you omitted a final zero). So I don't think you've missed anything except you rounded the 0.0163
from UCI!!!!! 1 is equal bc of equilibrium 2 is endothermic bc of absorbing heat 3 is absorb....bc it is endothermic yay all finish!
yo yo yo I got 175.1637945 b/c : p1/t1 = p2/t2 762/298.85 = p2/ 315.65 p2 = 804.8362055 subtract w/ 980.... get the positive value.... 175.1637945 your welcome. hahaha UCI!!!!
dude its (-M/B)^(1/2)

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