Question $1$:

An average distance, $x,$ that a molecule travels in an evironment, can be calculated using the formula given below:

$x=\sqrt[\phantom{2}]{2*D*t},$ where $D$ is diffusivity constant, and $t$ is time.

Please calculate the time for an average oxygen molecule to reach the veinless cornea of the eye by diffusing through its tear layer, which has a $0\mathrm{.}5mm$ thickness.

$\backslash$table$[[$Diffusing molecule,Medium,$D(\frac{m^2}{s})$