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Given 10 gram of vitamin C (E=0.18), we can make ml of isotonic Vitamin C solution.
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- You have 10 mg/ml ethidium bromide solution. If you add 5 µl of this to 50 ml of agarose gel solution, what will be the final concentration of ethidium bromide in the gel solution in mg/ml?A 1.143 g sample contains only vitamin C (C,H, 0,) and sucralose (C,H,Cl, O,). When the sample is dissolved in water to a total volume of 31.7 mL, the osmotic pressure of the solution is 3.91 atm at 285 K. What is the mass percent of vitamin C and sucralose in the sample? vitamin C: sucralose: %You have just used up the last of a 1.2 % m/m solution of agarose in water. You require another 100mls. How many grams of Agarose do you require? Note 1ml of water=1g What is the % w/v of a 100ml solution containing 5g of NaCl?
- The standard curve to determine the amount of betacyanin is shown below. You extracted a red pigment from a beet disc (the mass of a disc is 2 g) using 10 ml of 20% ethanol solution. You measured absorbance of the solution above the beet disc every minute for a total time of 20 minutes. The increase in absorbance was linear during a period of time from 1 min to 10 min. The absorbance at 10 min was 0.8. Calculate the amount of betacyanin extracted from 1g of a beet tissue per minute. Explain your calculations. You can use Excel or a calculator.Mn (s) + 2 CuCl (aq) --> 2 Cu (s) + MnCl2 How many grams of Cu will be produced by 2.9 moles of Mn? Round your answer to 2 decimal places.A liter of a TPN solution contains 500 milliliters of 50 percent dextrose solution and 500 milliliters of 5 percent amino acid solution. Determine the daily energy and protein intakes of a person who receives 2 liters per day of such a solution. Calculate the average daily energy intake if the person also receives 500 milliliters of a 20 percent fat emulsion three times a week.
- The glucose content of samples can be determined using Nelson't test. The equation of the line for the standard curve preapred for varying concentrations of glucose is y = 3.0x + 0.2. Based from this information, determine the glucose concentration (in M) of a strawberry preserve having an absorbance reading of 1.35.How many grams of glucose would you need to make 500 mL of an 8% solution?How many mL of the 1 M glucose stock solution do you need to prepare 100 mL of a 1 mM glucose solution?
- You want to prepare a 15 mL gel containing 0.8% (weight /volume) agarose. How much agarosedo you need to weigh to prepare the solution? Show all your calculations.Hint: Write down the units for 0.8% knowing that agarose is a powder that is mixed with aliquidYou have a 1000X stock solution of sodium chloride (NaCl). The concentration of NaCl in the stock solution is 5M. a)How would you make 300mL of a 1X solution? b)What is the concentration of NaCl in your 1X solution?You have a 15% (m/v) solution of vitamin B6. How much of this solution do you need to produce 50 mL of a 3.00% solution? Do not put any units in your answer, just the number of milliliters.