initial commit / add all books

13 files changed, 230 insertions, 0 deletions

diff --git a/2120/CH2/EX2.1/exa_2_1.sce b/2120/CH2/EX2.1/exa_2_1.sce
new file mode 100755
index 000000000..0e178bb87
--- /dev/null
+++ b/2120/CH2/EX2.1/exa_2_1.sce
@@ -0,0 +1,14 @@
+// Exa 2.1

+clc;

+clear;

+close;

+// Given data

+p1= 2;// in bar

+v1= 30;// in litre

+T1= 27+273;// in K

+T2= -3+273;// in K

+v2= v1;// in litre

+// Gas law  p1*v1/T1= p2*v2/T2

+p2= p1*v1*T2/(T1*v2);// in bar

+disp(p2,"The air pressure in the tyre in bar is :")

+ 

diff --git a/2120/CH2/EX2.12/exa_2_12.sce b/2120/CH2/EX2.12/exa_2_12.sce
new file mode 100755
index 000000000..cf190e289
--- /dev/null
+++ b/2120/CH2/EX2.12/exa_2_12.sce
@@ -0,0 +1,13 @@
+// Exa 2.12

+clc;

+clear;

+close;

+// Given data

+AvogadroNo= 6.023*10^23;

+n= 5/AvogadroNo;// number of moles

+v=10^-6;// in m^3

+T= -270+273;// in K

+R= 0.287;

+p= n*R*T/v;// in kPa

+p= p*10^18;// in aPa

+disp("The pressure in the space is "+string(p)+" aPa");

diff --git a/2120/CH2/EX2.13/exa_2_13.sce b/2120/CH2/EX2.13/exa_2_13.sce
new file mode 100755
index 000000000..d34e993fd
--- /dev/null
+++ b/2120/CH2/EX2.13/exa_2_13.sce
@@ -0,0 +1,12 @@
+// Exa 2.13

+clc;

+clear;

+close;

+// Given data

+T1= 300;// in K

+T2= 900;// in K

+m=2;// in kg

+Cp= '40+600/sqrt(T)+7000/T';// in kJ/kg mole K

+delta_H=m* integrate('40-600/sqrt(T)+7000/T','T',T1,T2);// in kJ/kg mole

+delta_H= delta_H/17.03;// in kJ/kg

+disp(delta_H,"Change in enthalpy in kJ/kg is : ")

diff --git a/2120/CH2/EX2.14/exa_2_14.sce b/2120/CH2/EX2.14/exa_2_14.sce
new file mode 100755
index 000000000..522088c61
--- /dev/null
+++ b/2120/CH2/EX2.14/exa_2_14.sce
@@ -0,0 +1,24 @@
+// Exa 2.14

+clc;

+clear;

+close;

+// Given data

+m=12;// in kg mol

+v=723.7;// in m^3

+T=140;// in °C

+T=T+273;// in K

+rho= 0.644;// in kg/m^3

+Ro= 8314;// in J/kg-mole K

+// rho= m/v, where m in Kg , so rho= m*M/v

+M= rho*v/m;

+m= m*M;// in kg

+disp(M,"Molecular weight is : ")

+

+// Part (b)

+R= Ro/M;// in J/kg K

+disp(R*10^-3,"Gas constant in kJ/kg K")

+

+// Part(c)

+p= m*R*T/v;// in N/m^2

+p=p*10^-5;// in bar

+disp(p,"The pressure of the gas in bar is : ")

diff --git a/2120/CH2/EX2.15/exa_2_15.sce b/2120/CH2/EX2.15/exa_2_15.sce
new file mode 100755
index 000000000..07a7c0212
--- /dev/null
+++ b/2120/CH2/EX2.15/exa_2_15.sce
@@ -0,0 +1,16 @@
+// Exa 2.15

+clc;

+clear;

+close;

+// Given data

+p= 0.98;// in bar

+p= p*10^5;// in N/m^2

+v=1000;// in m^3

+T= 27+273;// in K

+g= 9.8;

+M=2;

+Ro= 8314;// in J/kg-mole K

+R=Ro/M;// in kg K

+m= p*v/(R*T);// in kg

+W= m*g;// in N

+disp(W,"The load that can be lifted with the air of aerostat in N is : ")

diff --git a/2120/CH2/EX2.16/exa_2_16.sce b/2120/CH2/EX2.16/exa_2_16.sce
new file mode 100755
index 000000000..aad52a47d
--- /dev/null
+++ b/2120/CH2/EX2.16/exa_2_16.sce
@@ -0,0 +1,11 @@
+// Exa 2.16

+clc;

+clear;

+close;

+// Given data

+T1= 500;// in K

+T2= 2000;// in K

+m=1;// in kg

+Cp= '11.515-172/sqrt(T)-1530/T';// in kcal/kg mole K

+delta_H=m* integrate('11.515-172/sqrt(T)-1530/T','T',T1,T2);// in kcal/kg mole

+disp(delta_H,"Change in enthalpy in kcal/kg mole is : ")

diff --git a/2120/CH2/EX2.17/exa_2_17.sce b/2120/CH2/EX2.17/exa_2_17.sce
new file mode 100755
index 000000000..5e7a65551
--- /dev/null
+++ b/2120/CH2/EX2.17/exa_2_17.sce
@@ -0,0 +1,15 @@
+// Exa 2.17

+clc;

+clear;

+close;

+// Given data

+u='196+0.718*t';

+pv= '0.278*(t+273)';

+duBydt= 0.718;

+Cv= duBydt;// in kJ/kg-K

+h= u+pv;

+h='273.351+1.005*t';

+dhBydt= 1.005;// in kJ/kg-K

+Cp= dhBydt;// in kJ/kg-K

+disp(Cv,"The value of Cv in kJ/kg-K is : ")

+disp(Cp,"The value of Cp in kJ/kg-K is : ")

diff --git a/2120/CH2/EX2.2/exa_2_2.sce b/2120/CH2/EX2.2/exa_2_2.sce
new file mode 100755
index 000000000..39de168ba
--- /dev/null
+++ b/2120/CH2/EX2.2/exa_2_2.sce
@@ -0,0 +1,34 @@
+// Exa 2.2

+clc;

+clear;

+close;

+// Given data

+p= 12;// in bar

+p=p*10^5;// in N/m^2

+v= 25;// in m^3

+T= 30+273;// in K

+// Part (a) Mass of each gas

+//Formula p*v=m*R*T

+R_U= 8314;// in J/kg-mole K

+M_N2= 28.016;// in mole

+M_O2= 32;// in mole

+M_CO2= 44;// in mole

+R_N2= R_U/M_N2;// in J/kg K

+R_O2= R_U/M_O2;// in J/kg K

+R_CO2= R_U/M_CO2;// in J/kg K

+m_of_N2= p*v/(R_N2*T);// in kg

+m_of_O2= p*v/(R_O2*T);// in kg

+m_of_CO2= p*v/(R_CO2*T);// in kg

+disp(m_of_N2,"The mass of Nitrogen gas stored in the vessel in kg is : ")

+disp(m_of_O2,"The mass of Oxygen gas stored in the vessel in kg is : ")

+disp(round(m_of_CO2),"The mass of Carbon dioxide gas stored in the vessel in kg is : ")

+

+// Part (b) Molar Volume

+// Formula v_molar= M*R*T/p= R_U*T/p

+v_molar= R_U*T/p;// in m^3

+disp(v_molar,"Molar volume of the gas mixture in m^3 is : ")

+

+// Part (c) Average density

+// rho_avg= total mass/total volume

+rho_avg= (m_of_N2+m_of_O2+m_of_CO2)/v;// in kg/m^3

+disp(rho_avg,"Average density of the gas mixture in kg/m^3 is : ")

diff --git a/2120/CH2/EX2.3/exa_2_3.sce b/2120/CH2/EX2.3/exa_2_3.sce
new file mode 100755
index 000000000..062db4c22
--- /dev/null
+++ b/2120/CH2/EX2.3/exa_2_3.sce
@@ -0,0 +1,19 @@
+// Exa 2.3

+clc;

+clear;

+close;

+// Given data

+Qp= 1230; // kJ/kg

+Qv= 795; // kJ/kg

+t1= 16;// in °C

+t2= 96;// in °C

+R_U= 8.314;

+delta_T= t2-t1;// in °C

+Cp= Qp/delta_T;// in kJ/kg °C

+disp(Cp,"The value of Cp in kJ/kg°C")

+Cv= Qv/delta_T;// in kJ/kg °C

+disp(Cv,"The value of Cv in kJ/kg°C")

+R= Cp-Cv;// in kJ/kg °C

+disp(R,"The value of R in kJ/kg°C")

+molecular_weight= R_U/R;

+disp(molecular_weight,"Molecular weight of the gas is : ")

diff --git a/2120/CH2/EX2.4/exa_2_4.sce b/2120/CH2/EX2.4/exa_2_4.sce
new file mode 100755
index 000000000..b0a65f69e
--- /dev/null
+++ b/2120/CH2/EX2.4/exa_2_4.sce
@@ -0,0 +1,17 @@
+// Exa 2.4

+clc;

+clear;

+close;

+// Given data

+a= 0.85;

+b= 0.00004;

+c= 5*10^-5;

+T1= 300;// in K

+T2= 2300;// in K

+gama= 1.5;// the ratio of specific heats

+m=1;// in kg

+delta_H= m*integrate('a+b*T+c*T^2','T',T1,T2);// in kJ

+disp(delta_H*10^-3,"Change in enthalpy in MJ is : ")

+// Formula delta_U= integration of m*Cv = integration of m*Cp/gama= delta_H/gama

+delta_U= delta_H/gama;// in kJ

+disp(delta_U*10^-3,"The change in internal energy in MJ is : ")

diff --git a/2120/CH2/EX2.5/exa_2_5.sce b/2120/CH2/EX2.5/exa_2_5.sce
new file mode 100755
index 000000000..b30a45489
--- /dev/null
+++ b/2120/CH2/EX2.5/exa_2_5.sce
@@ -0,0 +1,20 @@
+// Exa 2.5

+clc;

+clear;

+close;

+// Given data

+v= 0.9/3;// in m^3/kg

+v= 2*v;// in m^3/kg mole (as M_hydrogen = 2)

+T=120+273;// in K

+R=8314;// in J/kg mole K

+a=2.51*10^4;// in Nm^4/(kg mole)^2

+b= 0.0262;

+// Part (a)

+p= R*T/v;// in N/m^2

+p= p*10^-5;// in bar

+disp(p,"Using perfect gas law the pressure for unit mass of hydrogen in bar is : ")

+

+// Part (b)

+p= R*T/(v-b)-a/v^2;// N/m^2

+p= p*10^-5;// in bar

+disp(p,"Using Van der waals equation, the pressure in bar is : ")

diff --git a/2120/CH2/EX2.6/exa_2_6.sce b/2120/CH2/EX2.6/exa_2_6.sce
new file mode 100755
index 000000000..d4902d050
--- /dev/null
+++ b/2120/CH2/EX2.6/exa_2_6.sce
@@ -0,0 +1,12 @@
+// Exa 2.6

+clc;

+clear;

+close;

+// Given data

+p1= 0.98;// in bar

+p2= 0.6;// in bar

+v1= 0.45;// in m^3/kg

+// Applying Boyle's law

+v2= p1*v1/p2;// in m^3/kg

+rho2= 1/v2;// in kg/m^3

+disp(rho2,"The density of the gas under the changed condition in kg/m^3 is : ")

diff --git a/2120/CH2/EX2.7/exa_2_7.sce b/2120/CH2/EX2.7/exa_2_7.sce
new file mode 100755
index 000000000..93220b4d3
--- /dev/null
+++ b/2120/CH2/EX2.7/exa_2_7.sce
@@ -0,0 +1,23 @@
+// Exa 2.7

+clc;

+clear;

+close;

+// Given data

+r=5;// in cm

+R_U= 8314

+T= 27+273;// in K

+V= 4/3*%pi*r^3;// volume of balloon in cm^3

+// atmPressure= 75 cm off mercury = 75/76*1.01325 

+atmPressure= round(75/76*1.01325) ;// in bar

+p= atmPressure;// pressure of hydrogen in balloon in bar

+p=p*10^5;// in N/m^2

+R= R_U/2;// in J/kg K

+m1= p*V/(R*T);// in kg

+// The volume of air displaced = the volume of balloon, so

+R=287;

+T=20+273;// in K

+m2= p*V/(R*T);// in kg

+payload= m2-m1;// in kg

+disp(payload,"Payload that can be lifted along with the balloon in kg is : ")

+

+