I've just gone through this with Akle below Here is a link. The numbers are different but the method is ok. Post your work here if you have trouble and I'll try to find the error.
http://www.jiskha.com/display.cgi?id=1328928607
In a constant-pressure calorimeter, 60.0 mL of 0.330 M Ba(OH)2 was added to 60.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 21.71 °C to 26.21 °C. If the solution has the same density and specific heat as water, what is ΔH for this reaction (per mole of H2O produced)? Assume that the total volume is the sum of the individual volumes.I need help asap!!! answer in kJ/mol H2O
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