NUR 658-Chemistry Lab – Calculating Carbohydrates Discussion

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1. Using the graph that you created in Graph 1 as a reference, where should the pipet float if the solution was a 13.0% sugar solution? How do you know this?

2. Using the graph that you created in Graph 1 as a reference, determine the carbohydrate content of the three beverages that you measured with your hydrometer.

3. Describe how your results compare to those listed on the food labels for the three beverages (recorded in Data Table 2). Calculate the percent error for each and show your work.

4. What is a monosaccharide and what is its chemical composition?

5. Why do food industries need to determine carbohydrate content? How many Calories are in 1 gram of carbohydrates?

6. How are carbohydrates separated from fats and proteins in foods that contain all three macronutrients?

7. Describe two methods for calculating carbohydrate content that were not used in this laboratory.

8. Define the relative density of a substance. Describe how you used the relative density to determine the carbohydrate content of the three unknown substances.

You must proofread your paper. But do not strictly rely on your computer’s spell-checker and grammar-checker; failure to do so indicates a lack of effort on your part and you can expect your grade to suffer accordingly. Papers with numerous misspelled words and grammatical mistakes will be penalized. Read over your paper – in silence and then aloud – before handing it in and make corrections as necessary. Often it is advantageous to have a friend proofread your paper for obvious errors. Handwritten corrections are preferable to uncorrected mistakes.

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The paper must be neatly formatted, double-spaced with a one-inch margin on the top, bottom, and sides of each page. When submitting hard copy, be sure to use white paper and print out using dark ink. If it is hard to read your essay, it will also be hard to follow your argument