when using dialysis bags to study osmosis in this lab whether or osmosis occurred is determined by measuring the

When using dialysis bags to study osmosis in a lab, whether or not osmosis has occurred is determined by measuring the change in the mass (weight) of the dialysis bag before and after exposure to different solutions. An increase in the bag's mass indicates water has moved into the bag (osmosis inward), while a decrease indicates water has moved out (osmosis outward). No change in mass suggests no net osmosis occurred. This process involves weighing the dialysis bag filled with a known solution, placing it in a beaker with a different solution, and then reweighing it after a set period to observe weight changes due to water movement across the semi-permeable membrane of the bag.