anono

A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.94 kg m-3. Under these conditions the total surface area of the balloon is 0.53 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. C...

Lmao I got a 1/5 NOT CORRECT

Thanks, Anon! #5 is wrong tho it's Exothermic!