Here Is the Answer:
The distance that an oxygen molecule would travel by diffusion through blood vessels depends on various factors such as the concentration gradient, temperature, and the surface area of the blood vessels. However, on average, it is estimated that the diffusion rate of oxygen in blood is approximately 0.2-0.3 millimeters per second. Therefore, it would take around 3,333 seconds or 55.5 minutes for an oxygen molecule to travel 1 meter by diffusion alone. This highlights the vital role that the circulatory system plays in efficiently transporting oxygen throughout the body.