2. the btb changed even though you added nothing to it. if the mixture in the center circle produced a gas, would this explain the change in the drops of btb? use kinetic theory to explain your answer.3. why were you asked to place the drops of btb further and further from the center (where the chemical reaction took place)? 4. imagine a room filled with air. in the center of this is a vial of an unknown gas with the same density as air. now the vial isbroken and the unknown gas escapes into the air. after twenty minutes are there more, less or the same number of unknown gasparticles near the vial as there were when it was first broken? why? 5. many of the behaviors observed in this lab were due to gas diffusion. define diffusion in your own words.