midterm 1 #9

midterm 1 #9 - so just add them up 180 249 554 502 966-141...

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Hi again, i think some ppl wanted to see the work for #9 but we didn't get to. .. so here's how the problem is worked out. .. the only sign you have to change is the delta H BaO(s)= -554kJ*mol-1 this is the delta H for BaO(g)--> BaO(s) but we want the opposite reaction which is BaO(s)-->BaO(g) so we have to change the sign to +. all the other given values have CORRECT sign.
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Unformatted text preview: so just add them up! 180+249+554+502+966-141+844=3154=delta HL although EA can be either - or +, depending on the situation (look at study guide in the solutions manual) i think imma go sleep now =) cya tmr~ jamie---------------------------------Ahhh. ..imagining that irresistible "new car" smell? Check outnew cars at Yahoo! Autos....
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