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After 20 minutes, the solution in the beaker will likely show changes depending on the experiment being conducted, such as diffusion or osmosis. If the tubing is semi-permeable and there is a concentration gradient, the solution inside the tubing may either dilute or concentrate based on the movement of solutes or water. The beaker solution may also change in color or clarity if substances are exchanged. Overall, the specific outcomes will depend on the nature of the solutions and the conditions of the experiment.

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6. If you wanted water to flow out of a tubing piece filled with a 50 solution what would the minimum concentration of the beaker solution need to be Explain your answer using scientific evidence.?

To allow water to flow out of a tubing piece filled with a 50% solute solution, the beaker solution must have a lower concentration than 50%, ideally pure water (0% solute). This is based on the principle of osmosis, where water moves from an area of lower solute concentration to an area of higher solute concentration. If the beaker solution has a concentration equal to or higher than 50%, water would not flow out, as the osmotic pressure would prevent the net movement of water from high to low concentration.


Why would the water level increase in the capillary tube during the investigation because of osmosis?

The water level increases in the capillary tube due to osmosis because the concentrated sugar solution in the dialysis tubing creates a lower concentration of water molecules inside the tubing. This lower concentration of water inside the dialysis tubing creates a concentration gradient that drives water to move from the beaker outside the tubing into the tubing through osmosis, causing the water level in the capillary tube to rise.


Why was there no sugar at first inside the tubing?

Sugar was absent in the tubing at first because it was in the water solution outside the tubing. Through osmosis, water molecules moved from the tubing, which had lower sugar concentration, into the solution with higher sugar concentration, equilibrating the sugar levels inside and outside the tubing.


How can you tell if glucose starch water and iodine passes through the cell membrane?

If the glucose, starch, and iodine pass through the cell membrane, you can perform a color change test. The presence of glucose will show a positive result with Benedict's reagent turning orange/red. The presence of starch will show a positive result with iodine turning blue/black.


What would happen to the diffusion process if the solution surrounding the tubing were not regularly cleaned and discarded?

If the solution surrounding the tubing is not regularly cleaned and discarded, it would lead to an accumulation of solutes and potential contaminants. This buildup could create a gradient that slows down the diffusion process, as the concentration difference between the inside of the tubing and the surrounding solution may decrease. Additionally, increased viscosity and fouling could further hinder the movement of molecules, ultimately reducing the efficiency of diffusion.


Why were only two substances able to diffuse out of the dialysis tubing into the beaker in the dialysis experiment?

In the dialysis experiment, only two substances were able to diffuse out of the dialysis tubing into the beaker due to the size of their molecules and the selective permeability of the dialysis membrane. The membrane allows smaller molecules, such as glucose and urea, to pass through while restricting larger molecules like starch or proteins. This selective permeability is essential for simulating biological processes, where cells selectively allow certain substances to enter or exit. Thus, only those small enough to fit through the pores of the dialysis tubing were able to diffuse into the surrounding solution.


Why did the starch not enter the beaker?

The starch did not enter the beaker because the membrane of the dialysis tubing is selectively permeable, allowing only smaller molecules, like glucose and water, to pass through. Starch molecules are too large to pass through the pores of the membrane, thus they were unable to enter the beaker.


What are the differences between primary and secondary IV tubing?

Primary IV tubing is used to deliver the main IV solution, while secondary IV tubing is used to deliver additional medications or fluids. Primary tubing typically has a larger diameter and is connected directly to the IV bag, while secondary tubing is connected to the primary tubing through a port.


Can oxygen pass through pores of dialysis tubing?

Yes, oxygen molecules are small enough to pass through the pores of dialysis tubing. This allows oxygen to diffuse into the dialysis tubing from a surrounding solution or environment.


What has one hole and can hold glass tubing?

A rubber stopper with one hole can be used to securely hold glass tubing in place, creating a seal that prevents leaks or spills. The tubing can be inserted through the hole in the stopper, allowing for a tight fit that helps with fluid transfer or containment.


Can Windex with ammonia-d be used to clean neon sign tubing without harming the tubing?

It is not recommended to use Windex with ammonia-d on neon sign tubing as it can harm the tubing. It is best to use a gentle cleaning solution specifically designed for neon signs to avoid potential damage.


Why does the weight Weight of water in dialysis tubing changes over time?

The weight of water in dialysis tubing changes over time due to osmosis, where water moves across the semi-permeable membrane in response to concentration gradients. If the solution outside the tubing is more concentrated (hypertonic), water will exit the tubing to balance concentrations, resulting in weight loss. Conversely, if the external solution is less concentrated (hypotonic), water will enter the tubing, increasing its weight. This dynamic continues until equilibrium is reached or until the dialysis process is stopped.