5.55 When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in...

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How to solve the problem? Need step-by-step explanation. Question 5.55 on page 200

<p>"When a 6.50-g sample of solid sodium hydroxide disolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises form 21.6 degrees Celcius to37.8 degrees Celcius. Calculate delta-H (in kJ/mol NaOH) for the solution process "NaOH yields Na(+)(aq) + OH(-)(aq)". Assume that the specific heat of solution is thesame as that of pure water."</p>

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