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sholland90 sholland90
wrote...
11 years ago Edited: 11 years ago, medgirl90
Please help! I have no freaking idea what it is I need to do or how to do it! =[

 Apparently, it is not easy to separate sugar from the drink in order to determine the mass of sugar. Your goal is to develop a quick and easy way of determining the mass of sugar without separating the sugar. How is it possible? The answer lies in an indirect way of getting the mass from another measurable variable of the drink. If we know exactly how this measurable variable is related to the mass of sugar, we can measure the variable and calculate the mass from the pre-determined relationship between the measurable variable and the mass of sugar. 
     In the attached excel file, you can find data of many sugar solutions containing different amount of sugar, their molarities, and densities. You are going to use these data to identify the measurable variable that shows a strong and defined relationship with the mass of sugar. You will also find the mathematical equation for the relationship from these data, which once being determined it can be used ever time to calculate the mass of sugar from the measured quantity of the variable. 
     One method of identifying relations between two variables is by making a plot between data of the two variables. From the trend of the graph, you can visually identify the relationship as linear, non-linear, or no relationship at all. It is useful to draw a line to the graph to test if the linear relationship exists; if the linear relationship does exist, you can find the position and angle of the line with a ruler that best fits all your data points. Unfortunately, the best-fit-lines found by this technique vary greatly from person to person, and could be very inconsistent by novices.     
     With the advance of computer technologies and the applications of mathematics, such scheme described above for identifying a relationship using a graph can be done automatically with a computer software in a very efficient and consistent way. The programs with statistical functionalities such as EXCEL can be used to add a trendline (best-fit-line if you do it manually with a ruler) to your graph and show mathematical equation of the line that defines the relationship between the two variables.
     In this assignment, you need to play with the provided data to determine which variable has a strong relationship with the mass of sugar and is also easy to be measured from a commercial drink. You will make plots between the mass of sugar and two other variables, density and molarity, to identify the variable of your choice. You can read more information about scientific graphing and using EXCEL to make a graph from the links.
     To receive the credits for this assignment, you need to provide the following information:
The variable of your choice
The rationale of your choice
The evidence of your choice (attach the graphs)
The reason you don’t choose other variable
     When you make a scientific graph, you need to label your graph clearly. For example, the two axes, the title of the graph, and the scale of each axis needs to be properly marked. In this lab, deduction will be made for improperly labeled graphs. If your axes have units, include the units in your labels, too.

Post Merge: 11 years ago
I am also supposed to write a hypothesis and an experimental procedure...
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wrote...
11 years ago
wouldn't this have to do with the density of the solution?
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