# Lab report relationship between concentration and Which substance s are entering the bag and which are leaving the bag? What experimental evidence supports your answer? Glucose and water left the bag, the evidence was the Testape color.

Explain the results you obtained. Include the concentration differences and membrane pore size in your discussion. The results simply state that the water, glucose, and IKI were small enough molecules to pass through the selectively permeable membrane.

Quantitative data uses numbers to measure observed changes.

Describe the relationship between absorbance, molar absorptivity, path length, and concentration in Beer’s Law Predict how the intensity of light absorbed/transmitted will change with changes in solution type, solution concentration, container width, or light source, and explain why. report measurements as percent transmittance (%T) or directly as absorbance (A). In this investigation, you will be guided to discover the relationship absorbance and concentration of solution. In this lab, you will be given a known concentration (“stock solution”) of the blue #1 dye What Is the Relationship Between the Concentration of. Lab #3: Spectrophotometry p. 1 Lab #3: Spectrophotometry Background One of the key functions of the homeostatic mechanisms of the human body is to maintain relationship between the concentration and light absorbance (i.e., per each unit increase in concentration, the absorbance of the solution.

How could this experiment be modified so that quantitative data could be collected to show that water diffused into the dialysis bag? Quantitative data would include the initial and final percent concentrations of the glucose, therefore showing the concentration of water by the change of percent in glucose.

The movement would be noticeable in the concentration because it is known that water moves from high water potential to a low water potential. Based on your observations, rank the following by relative size, beginning with the smallest: The smallest substance was IKI, followed by water, glucose, the membrane pores, then the starch molecules.

What results would you expect if the experiment started with a glucose and IKI solution inside the bag and only starch and water outside? Based on the size of the molecules, the glucose and IKI would move out of the bag, the water in, and the starch left in the beaker again.

Explain the relationship between the change in mass and the molarity of sucrose within the dialysis bags. These two things are directly proportional. As the mass increases, so does the molarity.

Predict what would happen to the mass of each bag in this experiment if all the bags were placed in a 0. These are inversely proportional because whenever the sucrose molarity inside the bag is more concentrated, it will become more dilute and vise versa.

The solutions will reach equilibrium somewhere between the two concentrations. Why did you calculate the percent change in mass rather than simply using the change in mass? The percent was calculated to give the exact difference, along with considering the quantities of solution.Plot illustrating the relationship between substrate concentration and reaction rate.

Note that as substrate concentration increases, rate increases, but the Lab #4: Enzymes p. 4 concentration increases, more and more enzyme molecules are locked up in enzyme-substrate complexes at .

Plot illustrating the mathematical relationship between enzyme concentration and enzyme activity. Lab #4: Enzymes p. 3 2. Effect of Substrate Concentration Lab #4: Enzymes p. 4 concentration increases, more and more enzyme molecules are locked up in enzyme-substrate complexes at . Enzyme Lab: Temperature and Enzyme Concentration Graphs and Data Table Collected In Lab Enzymes and Temperature Based on our lab, our hypothesis was clearly supported. The R2 is about which means a strong relationship between the two variables. Lab #3: Spectrophotometry p. 1 Lab #3: Spectrophotometry Background One of the key functions of the homeostatic mechanisms of the human body is to maintain relationship between the concentration and light absorbance (i.e., per each unit increase in concentration, the absorbance of the solution.

A relationship exists between density and percent by mass (concentration unit) for the solutions studied in this experiment. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture%(6). The linear relationship between absorbance and concentration displays that absorbance depends on the concentration.

Beer’s Law, A=Ebc, helped to develop the linear equation, since absorbance was equal to y, Eb was equal to m, and the concentration, c, was equal to the slope, x, in the equation y=mx+b.

LAB 9: Using Spectrophotometry to Determine Concentration