import math
#initialisation of variables
k=9.12*10** -4 # secˆ−1
H=25100 # cal moleˆ−1
S=-10.6 # cal degˆ−1 moleˆ−1
#RESULTS
print 'Entropy of activation =',S,'cal degˆ−1 moleˆ−1'
import math
#initialisation of variables
h= 6.62*10** -27 # ergs / sec
c= 3*10**10 #cm/ sec
wl= 4358 #A
I= 14000 # ergs secˆ−1
p= 80.1 # percent
t= 1105 # sec
n= 0.075 # millimole
#CALCULATIONS
E= h*c/(wl*10**-8)
q= I*p*t/(100*E)
M= 6*10**23*n*10**-3
P= M/q
#RESULTS
P=round(P,2)
print 'quantum yield =',P
import math
#initialisation of variables
a=43560 # f t ˆ−2
t= 500 #min dayˆ−1
E= 1000 # cal minˆ−1 f t ˆ−2
m= 2 # tons acreˆ−1
E1= 4000 # cal gramˆ−1
M= 9.07*10**5 #gram tonˆ−1
#CALCULATIONS
Sh= a*t*E*365.26
Hs= m*M*E1
r= Hs/Sh
#RESULTS
r=round(r,6)
print 'fraction of solar energy stored =',r
import math
#initialisation of variables
h=6.625*10**-27 # ergs /mole
f=2.65*10**-5 # secˆ−1
c=3*10**10 #cm/ sec
t=2
N=6*10**23 # molecules
M=382 #gms
E1=750 # ergs
#CALCULATIONS
E=h*c/f
n1=E1/E
m=n1/(t*7)
G=m*M/N
#RESULTS
m=m*10**-12
m=round(m,2)
G=G*10**9
G=round(G,2)
print 'number of quanta =',n1
print 'number of quanta =',m,'* 10**12 molecules'
print 'grams per day=',G,'*10**-9 gms'