1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Bomb calorimetry

  1. Oct 1, 2007 #1
    Need help!! I tried using the equation: Heat evolved= (specific heat)(Mass of Solution)(Change in Temp) but I cannot get the right answer.

    In a coffee-cup calorimeter, 1.30 g of NH4NO3 is mixed with 75.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.19°C. Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
  2. jcsd
  3. Nov 8, 2016 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    ((1.3+75)x4.18x1.81x0.001)kJ / (1.30/80)mol = 35.5 kJ/mol
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Threads - Bomb calorimetry Date
Aircraft bombing problem Aug 27, 2010