Recent content by toni_2374

Hi I have a problem with reading data in fortran 90. my programs try to read a txt file that only contains one number in it but if the txt file is empty it stops. i want to make it continue what should i do?

TANX but i want a explanation for the order of salts, which one acts more strongly?, and what is the difference between hydrophilic/hydrophobic dispersed substance with negetive/positive charge on its surface regarding their stability,how they interact with diffrent salts.

suppose we have a substance that is hydrophobic/hydrophilic and also has some charge on it surface(negative or positive) disspersed in water. if we add some salt different kinds possible(NaCl NaNO3 NaSCN). What is the effect of hydrophobicity and surface charge on Electrophoretic mobility?

yes particle will be uniformly charged on surface,and we consider particle as sphere to be able to use A=4πr^2,HOW should i calculate electric potential energy?

Homework Statement 1. Given a coloidal polystyrene particle with a diameter of 350 nm and a surface charge of 7.73. µC cm-2 evaluate: a) the electrostatic energy under and applied voltage of 100 mV Homework Equations particle charge density: ρ = (3Q)/(4πR^3) U0 =∫V (r)dq The...