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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter21 Surface Chemistry"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 21.1, Page no.79"
]
},
{
"cell_type": "code",
"execution_count": 25,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"cross −sectional area = 970741.0 cmˆ2\n",
"thcikness t of the film = 0.25 * 10^-5 cm\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"A=500.0 #cmˆ2\n",
"m=0.106 #mg\n",
"N=6*10*23 # molecules\n",
"M=284.0 #g moleˆ−1\n",
"d=0.85 #g/cmˆ3\n",
"#CALCULATIONS\n",
"A1=A*M/(N*m*10**-3) \n",
"t= m*(10**-3)/((A*d)*(10**-6)) \n",
"#RESULTS\n",
"A1=round(A1,1)\n",
"t=round(t,2)\n",
"print 'cross −sectional area =',A1,'cmˆ2'\n",
"print 'thcikness t of the film =',t,'* 10^-5 cm'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 21.2, Page no.79"
]
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Surface area per gram of gel = 559.8 * 10^10 mˆ2 gˆ−1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"V=129 #ml gˆ−1 \n",
"N=6*10**23 # molecules \n",
"A=16.2 #Aˆ2 \n",
"#CALCULATIONS \n",
"SA=V*N*A/((22.4)*10**23 )\n",
"#RESULTS\n",
"SA=round(SA,1)\n",
"print 'Surface area per gram of gel =',SA,'* 10^10 mˆ2 gˆ−1'"
]
}
],
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"name": "Python [Root]"
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"name": "ipython",
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"file_extension": ".py",
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|
