Recent content by yeung2743

Homework Statement Calculate the time needed for a perfectly spherical balloon with rahis R to reduce its volume to R/2 due to diffusion by applying Fick's law of diffusion. Assuming the young modulus of balloon is E and the gas filled is nitrogen. diffusion constant of nitrogen is D. Please...

I understand now Thx all you three guys ^^

I want to know why there are cis- and trans form of 1,3dibromo-1,3-dimethylcyclobutane? and anybody explain it to me thanks a lot