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Chemical Differences Among Carbohydrates1) How can you distinguish chemically between starch and three other carbohydrates (sucrose, glucose, & lactose)?
2) What would you expect to observe when adding one drop of iodine-potassium iodine reagent to each of the four carbohydrates?
3) How does Benedict's Reagent distinguish between carbohydrates?
4) When adding 5 drops of Benedict's reagent to 2 mL each of the above four carbohydrates and setting the test tubes in a hot water bath for 1-2 minutes, would you expect to see any color change and if so, what color and in which ones?
A 1L flask is filled with 1.00 g of argon at 25 C . A sample of ethane vapor is added to the same flask until the total pressure is 1.20 atm. What is partial pressure of Argon and ethane in the flask?
Caffeine, C8H10N4O2, is a stimulant found in tea and coffee. A sample of the substance was dissolved in 41.5 g of chloroform, CHCl3, to give a 0.0940 m solution.
A 1.17 g sample of an alkane hydrocarbon gas occupies a volume of 674 mL at 28°C and 741 mmHg. Alkanes are known to have the general formula CnH2n+2.
The pH of a bicarbonate-carbonic acid buffer is 8.00. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
corrosion technologist pipetted a 100.00 mL hard water sample and titrated it with 37.64 mL of 0.01 M EDTA solution for a total hardness endpoint
pKa of a carboxylic acid group found on a molecule of DOM is 4.2 and pKa of An amino group found on a molecule of DOM is 9.3. Explain how pH influences the ability of these groups to bind to metals. Illustrate how well each of these groups would b..
A 2.52- sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess to yield 4.36 of and 0.892 of as the only carbon and hydrogen containing products respectively.
A water pipe fills a container that measures 189 cm , 307 cm ,272 cm in 97 seconds, What is the rate of flow in the pipe in liters per minute.
Calculate empirical formula of this compound & molecular formula and calculate the molality of solution of sulfuric acid?
Compute percent C16H34 that reacted to form CO(g) in the process. If experiment carried out at constant V, how much heat would have been released?
How much heat is absorbed when 5.53 mol of NH4NO3 solid is dissolved in water? (Heat of soluton = 25.7 kJ/mol)
If the titrant has a molarity of 0.2750 M and there are 40.00 mL of analyte present, what is the molarity of the analyte?
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