Most popular questions and responses by timur
  1. chemistry

    A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.57 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1.

    asked on December 14, 2012
  1. Math

    Part c is done it’s look at the first response it has all 3 parts

    posted on April 28, 2019