Buffer solution

Identification of a Liquid Objective This experiment was performed out to determine the identity of an unknown liquid sample by investigating its solubility in water, hexane and ethyl alcohol. Also, its density and boiling point were obtained and compared to the theoretical values. Theory Chemical substances can be identified through investigation of their chemical and physical properties and then comparing the experimental values to the standard values. Physical properties do not change the…

As stated originally, our hypothesis for the laboratory experiment was that there is an inverse relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture. However, our experimental process yielded just the opposite results- a direct relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture- meaning that when there…

There are six principles of pressure. One will explain each of the six principles of pressure. Also, state why it is important that the fire and emergency services personnel understand these six principles. The first principle is stating that the water is trying to burst out, therefore, it pushes and applies pressure to all confining contacting walls within a system. Water will behave differently in open containers than in confined spaces of firefighting systems (Sturzenbecker, Adams, &…

solute B was about 278.4g/mol, which is close to given molar mass of octadecanol. Conclusion- This lab allowed us to determine the molar mass of the unknown solute B by finding the difference in freezing point temperature of the cyclohexanol and the solution with the unknown solute B. My experimental value for the molar mass was 278.4g/mol which means that solute B is octadecanol because its molar mass is 270g/mol. This means that my experimental…

The hypothesis was that as the amount of sugar in the water increased, the amount of time it takes to dissolve sugar would increase. My group’s data from the experiment refutes this hypothesis, because the amount of sugar already present in the water had no effect on the time it took to dissolve. The only variable that changed was the amount of sugar that was already in the glass. Other variables my group attempted to avoid changing was the amount of water in the glass, how much sugar put into…

targeted to the skin but instead an antihistamine used to prevent balance related sickness, this might suggest why the use of the alternative lipid, DSPC, gave better results. For sample CIN14, (Table 8) that no cholesterol was used, observed the formation of crystals rather than functional liposomes and the most extreme drop in EE% of 28.33% (from 35.55% to 7.00%). This emphasises the requirement for some degree of fluidity for a membrane to be functional. As the presence of cholesterol is…

It is expected that if the concentration of sucrose increases from 0.0 M, 0.2 M, 0.4 M, 0.6 M and 0.8 M (±0.01 g) in a 40 (±0.5) mL sucrose solution, then the average percent change in mass in Solanum tuberosum core will decrease. This is because if the Solanum tuberosum cores are placed in a hypotonic sucrose solution, which is described as having lower osmolarity, than the percent change in mass of the Solanum tuberosum core will increase due to the fact that water molecules will be moving…

increase. The qualitative observations show the flexibility of each potato before and after the incubation. The initial observations for the potato slivers were slightly stiff and high in flexibility. After leaving the 10 mL sucrose concentration solution for 45 minutes, the results show an increase in appearance, and flexibility of each individual potato. The qualitative observations from the initial results show that the potato cells have a flavescent colour with rigid texture. Also, the…

one of the deficiencies. Develop practical actions that can output many results by reducing, abolishing or functioning around each of the top obstacles inorder to get the job done. The after affect will allow the workers to embark on looking for a solution to the other issues at hand. Unfortunately, stakeholders find themselves in conflict with one another when working on joint project(s). For instance, think about establishing…

The goal of this lab was to find the molar sucrose concentration at equilibrium. Which is when the potato core and the sucrose solution reach equilibrium, so that no water is entering or leaving the cell. After collecting the data, the line of best fit never crossed the x-axis or showed where the molar sucrose concentration at equilibrium. I had to extrapolated the point at which it crossed the x-axis. This led to the data being unreliable because there is no physical evidence present that…