**(To simplify your calculation, I now only request
the CASE #1 calculation, in which the cloud droplet temperature is kept
the same as that of the environmental air)**

**Constants**

Rw = 461.0 J/kg/K

rhow = 1000.0 ;kg/m3

sigma = 0.075 N/m2

mw = 18.0 g/mol

ms = 58.5 g/mol

M = 1.0e-14 g

ion = 2.0

D = 2.5e-6 m2/s

lamda = D

L = 2.5E6 J/kg

** Environmental condition (temperature
and relative humidity)**

TF = 273.16 K

RHF = 1.05

**Initial condition**

R0 = 1.0 micrometer

T00 = T

**Integration**

Use N = 3601 steps with time interval deltaT = 2 seconds to integrate the condensational growth model for two hours.

**Requirement**

Please hand in your procedure, the program, printout of the radius
every 5 minutes, and graph of the radius as a function of time.

**Sample Graph Result**