removing problem statements

1 files changed, 15 insertions, 21 deletions

diff --git a/Basic_Principles_And_Calculations_In_Chemical_Engineering/ch2.ipynb b/Basic_Principles_And_Calculations_In_Chemical_Engineering/ch2.ipynb
index d803af44..84439d15 100644
--- a/Basic_Principles_And_Calculations_In_Chemical_Engineering/ch2.ipynb
+++ b/Basic_Principles_And_Calculations_In_Chemical_Engineering/ch2.ipynb
@@ -1,6 +1,7 @@
 {
  "metadata": {
-  "name": ""
+  "name": "",
+  "signature": "sha256:ef26cf09debc2accb827957d575ac9576db35c1e13d184b4161dad1098add2f0"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -27,7 +28,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# calculate specific weight of water\n",
+      "\n",
       "\n",
       "# variables\n",
       "g=32.2;                     #ft/s^2\n",
@@ -68,7 +69,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc pressure at depth of 304.9m\n",
+      "\n",
       "\n",
       "# variables\n",
       "d=304.9;                       #m\n",
@@ -108,7 +109,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#gauge pressure=(density)*(acc. due to gravity)*(depth)\n",
       "\n",
       "# variables\n",
       "rho_oil=55.;                        #lbm/ft^3\n",
@@ -153,7 +153,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# Calculate the pressures\n",
+      "\n",
       "import math\n",
       "\n",
       "# varirbles\n",
@@ -213,7 +213,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc pressuer at different heights considering on density change in air\n",
+      "\n",
       "\n",
       "# variables\n",
       "p_atm=14.7;                        #psia\n",
@@ -275,7 +275,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# calculate the atmosphere\n",
+      "\n",
       "import math\n",
       "\n",
       "# variables\n",
@@ -319,7 +319,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# calculate net pressure.\n",
+      "\n",
       "import math\n",
       "\n",
       "# variables\n",
@@ -366,7 +366,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc the total force on a lock gate\n",
       "\n",
       "# variables\n",
       "#lock gate has water on one side and air on the other at atm. pressure\n",
@@ -414,7 +413,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc thickness of an oil storage\n",
+      "\n",
       "sigma_tensile=20000.                        #lbf/in^2 (tensile stress is normally 1/4 rupture stress)\n",
       "\n",
       "#max pressure is observed at the bottom of the storage\n",
@@ -456,7 +455,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc thickness of a storage tank\n",
       "\n",
       "# variables\n",
       "p_working=250.0;                          #lbf/in^2\n",
@@ -498,7 +496,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc payload of a helium balloon\n",
+      "\n",
       "import math\n",
       "\n",
       "# variables\n",
@@ -548,7 +546,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#wooden block floating in two phase mix of water and gasoline\n",
       "\n",
       "# variables\n",
       "#calc fraction of block in water\n",
@@ -588,7 +585,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc gauge pressure of cylinder in a manometer\n",
+      "\n",
       "\n",
       "# variables\n",
       "#height of water above pt.C = 2.5ft\n",
@@ -631,7 +628,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc pressure diff between two tanks in a two liquid manometer\n",
+      "\n",
       "rho_water=62.3;                       #lbm/ft^3\n",
       "SG_oil=1.1;\n",
       "rho_oil=SG_oil*(rho_water);\n",
@@ -674,7 +671,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc pressure of gauge through a spring piston system\n",
       "\n",
       "# variables\n",
       "k=10000.;                      #N/m (spring constant)\n",
@@ -714,7 +710,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc pressure diff at the mouth of the fire place\n",
+      "\n",
       "\n",
       "# variables\n",
       "g=32.2;                          #ft/s^2\n",
@@ -756,7 +752,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# calculate the gauge pressure at the bottom of the tank.\n",
       "\n",
       "# variables\n",
       "rho_water=1000.                       #Kg/m^3\n",
@@ -811,7 +806,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# calculate angle\n",
+      "\n",
       "import math\n",
       "\n",
       "# variables\n",
@@ -853,7 +848,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc the height to which liq in a cylinder rises when rotated\n",
       "\n",
       "import math\n",
       "# variables\n",
@@ -895,7 +889,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#calc thickness of liquid strip at the bottom of the industrial centrifuge\n",
+      "\n",
       "import math\n",
       "\n",
       "# variables\n",