A) How many mosm solute will 1 gram of NaCl yield? Show your calculations. (1gNaCl/1)*(1000mg/1gNaCl)(2/58mg)=34.5mOsm. 3. Mixed Solutions: If 1 mmole of glucose (180mg=1mOsm) and 1 mmole of NaCl (58mg=2mmOsm) are put into a beaker and distilled water added to make 1 liter, the osmolarity is 3 mOSm/L.
Quality Control for the Athenium Baking Soda Company 1225-022 1/30/2015 Introduction The Athenium Baking Soda Company has implemented a quality control program to check the purity and quality of their product. The Athenium Baking Soda Company has chosen from one of several methods of producing baking soda to react crystalline ammonium hydrogen carbonate with brine. NH_4 HCO_(3(s))+Na〖Cl〗_((aq)) □(→┬ ) NaHCO_(3(aq))+NH_4 〖Cl〗_((aq)) Brine is salt water containing a high concentration of sodium chloride, as well as contaminates potassium chloride, lithium chloride, and calcium chloride. Most manufacturing companies employ quality control scientists and technicians to analyze their products for purity, quality of workmanship, structural flaws, composition, and longevity. However, what is the best way to perform these quality control test and what two tests can be performed that will determine the concentration of baking soda is in the solution and what contaminates are in the solution?
The purpose of this experiment was to extract Trimyristin (C45H86O6 ) from ground nutmeg powder. Trimyristin is a white to yellowish-gray solid that is insoluble in water, but soluble in ether. Trimyrisin is found naturally in many vegetable fats and oils. Its synthesis was done using reflux as shown in the diagram on page 3. Allow the crystals to dry for 1 week then, weigh it, take a MP, and calculate the % yield.
8. Calculate the rate of oxygen production for each concentration and plot your results as a graph. DATA COLLECTION AND PROCESSING Mass of yeast / g Initial volume / cm3 Final volume / cm3 Volume difference / cm3 0.25 50 62 12 0.50 50 69 19 0.75
(b) How much working capital did each of these companies have at the end of 2011? What causes this difference? Working capital = current assets – current liabilities. The book’s companion website does not provide all of the balance sheet information for Coca-Cola, so the following information is from the Coca-Cola’s annual report found on their website. At the end of 2011, PepsiCo’s working capital was ($713) million, while Coca-Cola’s working capital was $1,214 million.
The problem of the experiment was as follows: How does the concentration of sugar in a solution affect the rate of the alcoholic fermentation being performed by the yeast cells? The independent variable of the experiment was the concentration of sugar in the apple cider. The dependent variable of the experiment was the time, in minutes; it took for the balloon to fill up with the carbon dioxide given off from the fermentation process. Finally, the hypothesis developed for the experiment was as follows: The higher the sugar concentration in the cider mixture, the less time it will take for the balloon to rise The procedure of the Alcoholic fermentation lab was as follows: 1. 3 test tubes, 3 balloons, a thermometer, a timer, a test tube rack, tape , and a marker will be needed 2.
To perform this experiment, we will utilize emission spectra, titrations, and thermal gravimetric analysis, using knowledge from Experiments 10, 4, Titrations of Na2CO3 and NAHCO3 by HCl (hydrochloric acid) will be performed to determine the concentration of HCl, as well as the number of moles of HCl present within the sample of baking soda. As a result, we will be able to determine the molar concentration of HCl by determining its equivalence point (the point on the graph where the exact amount of rectant needed to perform a reaction has been added) from graphical analysis. Na2CO3(aq.) + HCl(aq.) ==> NaHCO3(aq.)
How well did the results compare with your prediction? Urea was too large to diffuse through the 20 MWCO membrane because its molecular weight is about 60. I predicted that urea would not be able to pass through. 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane.
The results were expressed as milligrams of ascorbic acid equivalent per gram of sample. 2.10. Free radical scavenging activity on DPPH The effect of DPPH radical was evaluated by the method of Kumazawa, 2004 . Twenty-five µL of various concentrations of propolis samples were added to 825 µL of ethanolic solution of DPPH. Absorbance measurements were read at 517 nm, after 20 min of incubation time at room temperature (A1).
YEAST REPRODUCTION IN SUGAR SUBSTITUTES Johnna Ruth C. Lopez1 & Rose Tifanny A. Pol1 1Department of Biology, College of Science, Polytechnic University of the Philippines, Sta. Mesa, Manila ABSTRACT Yeast utilizes the glucose in its environment to make energy. Equal (aspartame) and Splenda (sucralose) are both man made sugar substitutes. These substances aren’t supposed to have any calorie content so yeast life shouldn’t be possible. 6 mL room temperature water, 0.6mL sugar and 0.6mL yeast were poured into each test tube.