Question 5 If you mixed a solution at ARCC that was 22.1 % mass/mass of the sugar sodium Ayanide and then transferred 2.00 mL weighing 3.17 g into a graduated cylinder and diluted to 10.00 mL, what mass of sodium Ayanide was transferred to your new solution? Your Answer:
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- If you mixed a solution at ARCC that was 17.5 % mass/mass of the sugar sodium and then transferred 2.00 mL weighing 3.21 g into a graduated cylinder and diluted to 10.00 mL, what mass of sodium was transferred to your new solution?Given the following unbalanced response: NaClO3 + H2O + I2 HIO3 + NaCl 0.25 ml sample of NaClO3 solution 0833M.0 was raised to the end with 0.30 ml of solutionWater of I2. What is the mass in grams of I2 contained in the raised solution? A. 0.159 grams B. 0.236 grams C. 0.264 grams D. 0.317 gramsIf 50mL of NaOH (mw=40g/mol) solution required 30mL of sulfuric acid (mw=98g/mol) solution in a titration and 30mL of sulfuric acid solution were required in the titration of 0.5038g of pure sodium carbonate (mw=106g/mol). What was the normality of the NaOH solution? (use 4 significant figures)
- 6. One teaspoon of sertraline 20 mg/mL must be mixed into eight fluid ounces of water before consuming. Express the final concentration of sertraline when mixed with water as a ratio strength (w/v). Rounddenominator of ratio strength (w/v) to the nearest whole number.What's the differences between two questions? Q1) How much calcium would you ingest by drinking one 8 oz glass of your tap water? Show all calculations. -->Tap water 8Oz = 8 x 0.0296L = 0.2368L Hardness = 66.73ppm = 66.73mg/L CaCO3 1L has 66.73mg CaCO3 0.2368L has 66.73mg x 0.2368 = 15.8017mg MW of CaCO3 = 100g/mol MW of Ca = 40g/mol 100g CaCO3 has 40gf of Ca 15.8017mg CaCO3 has 40/100 x 15.8017mg Ca We would ingest 6.321mg of Ca. Q2) What percentage of the recommended daily dose of calcium (1,150 mg/day) does 1.0 L of your water provide? Show all calculations. --> 66.73mg/1150mg x 100 = 5.80% My Question) Why this calculation is wrong? I think this calculation is same with question 1. Isn't it? CaCO3 = 100g/mol, Ca = 40g/mol 100g CaCO3 has 40g Ca. 66.73 CaCO3 has 40/100 x 66.73mg Ca Ca = 26.70mg 26.70mg/1150mg x 100 = 2.32%ascorbic acid (vitamin C) is highly soluble in water. What mass (in grams) of ascorbic acid is required to make a 0.85M stock solution with a volume of 100.0 mL (MW of ascorbic acid is 176.12 g/mol) b. A saturate ascorbic acid solution is 1.89 M. what volume of saturated solution would be needed to make the 100.0 mL solution above? c.Now suppose you want to wash out the 100 mL volumetric flask used above to make the 0.85 M solution. Assuming that any volume of water dumptd out of the flask leaves behind 0.50 mL worth of droplets, you are trying to figure out the best method of cleaning the flask using only 30 mL of pure water. You can either wash the flask once with all 30.0 mL of water or three times with 10 mL of water each time. Show which method leaves behind the least amount of ascorbic acid.
- Stock iron(II) solution (200Ug mL-1 Fe) ferrous ammonium sulfate hexahydrate mass= 0.1437g, transfer it to a 100 ml beaker. add 15 ml approx of water and 15m1 'approx of dilute sulphuric acid (2M H2SO.). then transfer FeII to 100 ml flask makeup to the mark with water. calculate the moles of ferrous ammonium sulfate hexahydrate solution in unit ug/mL.During lab, a student used a Mohr pipet to add the following solutions into a 25 mL volumetric flask. They calculated the final volumes added, which are recorded below. The student then followed the directions in the manual to make the stock solution. Volumes Used to Create Stock Solution Volume 0.200 M Fe(NO3)3 (mL) Volume 0.00200 M KSCN (mL) Stock Solution 8.99 mL 2.38 mL Using the stock solution above, the student made additional dilutions, with the final volumes below. Calculate the [FeSCN2+] in Standard 2. Report your answer in mM. Volumes Used to Create Standard Solutions Solution Volume Stock solution (mL) Volume Water (mL) Standard 1 7.04 3.47 Standard 2 4.72 5.13 Standard 3 2.71 7.43 Standard 4 1.41 9.14 Note: Reporting your answer in mM is for grading purposes only. It is not necessary during lab. Report your answer to three places after the decimal.During lab, a student used a Mohr pipet to add the following solutions into a 25 mL volumetric flask. They calculated the final volumes added, which are recorded below. The student then followed the directions in the manual to make the stock solution. Volumes Used to Create Stock Solution Volume 0.200 M Fe(NO3)3 (mL) Volume 0.00200 M KSCN (mL) Stock Solution 9.60 mL 2.55 mL Using the stock solution above, the student made additional dilutions, with the final volumes below. Calculate the concentration of iron(III) thiocyanate ion in Standard 2. For grading purposes, report your answer in mM with four places after the decimal.
- Data of milk: (first trial) Mass of milk: 104.4579g Concentration of NaOH (M): 0.09639 Volume of NaOH solution used: 5.5 mL Data of milk: (2nd trial) Mass of milk: 103.8405g Concentration of NaOH (M): 0.09639 Volume of NaOH solution used: 5.3 mL4. A fat sample with combination of acids contain standard hydrochloric acid for blank and sample with 8mL and 5mL respectively. The normality of the standard hydrochloric acid is 0.93N and the weight of the sample is 3 grams. Calculate the saponification value.Solve the required of the following and show the complete process to be able to gain the value of the correct answer. Given: Volume of Vinegar used (ml) = 25.00 mL Volume after dilution = 250.00 mL Volume of Aliquot used (ml) = 50.00 mL Volume NaOH used (ml) = 34.85 mL Concentration of NaOH = 0.09919475765 M Required: Calculate % (w/v) CH3COOH = ? P.S. Use weight in grams and volume of vinegar in mL, but correction based on aliquot should be made.