Solutions

5cm3) of saline solutions in 0%, 1%, 3%, 5% and 7% concentrations for 1800s (±0.3s (human error)) and comparing the initial masses (g±0.01g) with their masses after soaking (g±0.01g). There was an outlier in the 13% mass change of the apple core after soaking in 7% saline solution, as shown in Graph 2. However, this outlier and the general trend of the data support the hypothesis. Graph 1 shows a divergent change in masses of apple cores as the concentration of the saline solution is…

concentration to an area of higher solute concentration, in order to reach a dynamic equilibrium. The three general states of tonicity are hypo-tonic, iso-tonic, and hyper-tonic. Hypotonic solutions are lower in concentration as compared to another solution. There will be a net movement of water into the solution with higher solute concentration. If we take the example of a cell culture, pure water has a lower solute concentration than the inside of the cell so adding pure water to the cells…

proportional. When the mass percentage increase, so does the molarity. This is because the molarity of sucrose in the bag determines the amount of water that would either move in or out of the bag. If all the bag were to be placed in 0.4M sucrose solution instead of distilled water, bags that have molarity greater than 0.4 would have an increase in mass because water move into the bag to equalize the concentrations. Bags that has molarity less than 0.4 would lose water because water move out of…

With a cell inside of a hypotonic solution, the amount of a solute outside of the cell is less than the amount of solute inside the cell. The cell has more of the solute on the inside, which means the water will move into the cell. Water will move by osmosis to the area of greater solute concentration in order to balance the amount of solute and water. If a cell receives too much water as a result of a hypotonic environment, it may lyse, or burst, because of the influx of water. Plant cells…

In this experiment I attempted to created and study the affects of a egg in a hypertonic and hypotonic solution. To conduct this experiment I used the following materials: cups, eggs, vinegar, corn syrup, spoons and food coloring. To begin the experiment I placed three eggs in vinegar to dissolve their shells, leaving behind a thin membrane that allowed water to pass in and out of the eggs. The water molecules enter inside the eggs and the eggs begins to swell. Once the eggs have sat in the…

Standard solution is the solution that is been made by dissolving a precise mass of reactant meaning the starting substance in a chemical reaction, and it is important that the mass is weighed accurately into distinguish volume of water that will be used. This tells us that if the concentration of standard solution is accurate then it can also be used to work the concentration of a different solution that it can also react with. Its concentration is generally given in mol dm-3. Standard solution…

The experimental solutions were analyzed spectrophotometrically to collect the data. The absorbance of these solutions was recording. However, the collected data should not be greater than the given absorbance of p-nitrophenol standard (1.310). If the absorbance of experimental solutions was higher than the standard one, that solution had to be diluted to get the lower number. The maximum time to dilute solution in this experiment was 2. According to the Beer-Lambert Law, the absorbance…

Dissolve means to become or cause a liquid to be incorporated into a liquid to form a solution. The dissolved sugar in the water is a solution. The sugar is the solute; the substance being dissolved in the solvent and the water is the solvent, the liquid in which the solute is dissolved I to form a solution. The breaking of the bonds of sugar molecules causes the dissolving of sugar in water. When sugar is added to water the water particles become attracted to the sugar particles, which causes…

Discussion: Through experimentation, it has been determined spectroscopy provides valuable information on the absorbance behavior of triclosan in a solution. It acts as a viable way to measure the concentration of triclosan in a mixture. The data obtained using spectroscopy showed the soap sample contained 0.461% triclosan by mass. This coincides exactly with the information on the antibacterial concentration found on the bottle of soap. When using the spectroscopy method as a simple procedure…

Bed bugs have similar engorgement characterizes as many other bugs when it comes to the sodium solution concentrations. When offered only water versus when a solution that contained phosphate-buffered saline (PBS), the later was what was found to be the situation where more engorgement occurred. It was expressed that mouthparts that bring about the acceptance of different concentrations of sodium chloride are receptors known as gustatory receptions. In the instances lower sodium was engorged…