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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:e134d729844fc5fc379f513b7f1e5b167020e513591a6ab49b7a3de0e1f6059e"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 15 :  Fuel Cells"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 15.1  Page No : 321"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given\n",
+      "del_F = -56.29;#Smath.radians(numpy.arcmath.tan(ard free energy change in Kcal/Kgmole\n",
+      "del_H = -68.317;#Smath.radians(numpy.arcmath.tan(ard heat of reaction in Kcal/kgmole\n",
+      "F = 23.06;#Electro-chemical equivalent in Kcal/volt\n",
+      "J = 2.0;#Valance for H2\n",
+      "\n",
+      "#To Calculate the emf of the cell, cell efficiency and heat to be removed to maintain isothermal conditions\n",
+      "#Basis: 1 Kgmole of H2\n",
+      "#From equation 15.4 (page no 355)\n",
+      "E = -del_F/(F*J);\n",
+      "print '1.The emf of the cell is %f volt.'%(E);\n",
+      "n = del_F/del_H*100;\n",
+      "print ' 2.The cell efficiency is %f percent.'%(n);\n",
+      "Q = del_H-del_F;\n",
+      "print ' 3.The heat to be removed is %f Kcal to maintain the temperature at 25 degree celsius.'%(Q);\n",
+      "#end\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1.The emf of the cell is 1.220512 volt.\n",
+        " 2.The cell efficiency is 82.395304 percent.\n",
+        " 3.The heat to be removed is -12.027000 Kcal to maintain the temperature at 25 degree celsius.\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file