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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter20 Macromolecules"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 20.1, Page no.76"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"average molecular weight of this polystrene = 287.48 Kg moleˆ−1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"R=0.082 # l−atm degˆ−1 moleˆ−1 \n",
"T=25 #C \n",
"V=85*10**-6 # l−atm gˆ−1 \n",
"#CALCULATIONS \n",
"M=R*(273+T)/V \n",
"#RESULTS\n",
"M=M/10**3\n",
"M=round(M,2)\n",
"print 'average molecular weight of this polystrene =',M,'Kg moleˆ−1'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 20.2, Page no.76"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"maximum molecular weight = 69.41 Kg moleˆ−1\n"
]
}
],
"source": [
"import math\n",
"from math import pi\n",
"#initialisation of variables\n",
"T=20 #C \n",
"v=0.01005 # poise \n",
"N=6*10**23 # molecules\n",
"D=7.8*10** -7 \n",
"#CALCULATIONS \n",
"M=4*pi*N/(3*0.75*(D*N*6*pi*v/(8.31*10**7*(273+T))) **3) \n",
"#RESULTS\n",
"M=M/10**3\n",
"M=round(M,2)\n",
"print 'maximum molecular weight =',M,'Kg moleˆ−1'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 20.3, Page no.77"
]
},
{
"cell_type": "code",
"execution_count": 7,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"time = 1.04 * 10**-12 sec\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"w=2.82*10**7 \n",
"t2=70 #min \n",
"t1=60 #min \n",
"r2=6.731 #cm \n",
"r1=5.949 #cm \n",
"#CALCULATIONS \n",
"s=2.303*math.log10(r2/r1)/(w*t2*t1)\n",
"#RESULTS\n",
"s=s*10**12\n",
"s=round(s,2)\n",
"print 'time =',s,'* 10**-12 sec'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 20.4, Page no.77"
]
},
{
"cell_type": "code",
"execution_count": 13,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"molecular weight serum albium = 63.92 Kg mole ˆ−1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"R=8.31*10**7 # ergs degˆ−1 moleˆ−1 \n",
"T=20 #C \n",
"s=4.3*10** -13 # sec \n",
"D=6.15*10** -7 #cmˆ2 secˆ−1 \n",
"d=0.9982 #g/ cc \n",
"v=0.735 #cmˆ3 gˆ−1 \n",
"#CALCULATIONS\n",
"M=R*(273+T)*s/(D*(1-d*v)) \n",
"#RESULTS\n",
"M=M/10**3\n",
"M=round(M,2)\n",
"print 'molecular weight serum albium =',M,'Kg mole ˆ−1'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 20.5, Page no.78"
]
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Molecular weight = 210.98 g moleˆ−1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"K=3.7*10** -4 \n",
"a=0.62 \n",
"iv=0.74 \n",
"#CALCULATIONS \n",
"M=(iv/K)**(1/a) \n",
"#RESULTS\n",
"M=M/10**3\n",
"M=round(M,2)\n",
"print 'Molecular weight =',M,'g moleˆ−1'"
]
}
],
"metadata": {
"anaconda-cloud": {},
"kernelspec": {
"display_name": "Python [Root]",
"language": "python",
"name": "Python [Root]"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 2
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython2",
"version": "2.7.11"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
