How many grams of NISO, -6H,0 are needed to prepare 2.00x10 mL of a 3.5x10 M NISO, solution? 3. а. b. If 15.0 mL of the 3.5x10 M NISO, solution is diluted to 50.0 mL with water, what is the resulting NISO, concentration?
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- 0.250 g of aluminum sulfate is dissolved in enough water to make 150 mL of solution.a. How many equivalents of sulfate ion (SO42-) are in one mole of aluminum sulfate when itdissolves?b. What is the concentration of sulfate in (Eq/L)?c. How many equivalents (Eq) of SO42-are contained in 0.0280 L of the above aluminumsulfate solution?d. How many liters (L) of this aluminum sulfate solution would contain 0.0025 equivalents Eq of SO4 2-What is the concentration of a standardized HCl solution that required 50.78 mL of HCl to titrate 0.7682 g of a primary standard Na2CO3? Na2CO3 + 2HCl --> H2CO3 + 2NaCl Na2CO3 = 105.99 g/mol ROUND OFF FINAL ANSWER TO FOUR (4) SIG FIGS.KHP (aq)+NaOH (aq)-->NaKHP (aq)+H2O(l) Trial Vi (mL) Vf (mL) 1 36.19 48.56 2 3 A student masses out 1.096 grams of KHP, which is dissolved in 25.00 mL of DI water. This KHP solution is titrated with NaOH, as shown in the equation above. Calculate the molarity of the NaOH solution.
- 3. A student followed the procedure of this experiment to determine the percent NaOCl in a commercial bleaching solution that was found in the basement of an abandoned house. The student diluted 50.00 mL of the commercial bleaching solution to 250 mL in a volumetric flask, and titrated a 20-mL aliquot of the diluted bleaching solution. The titration required 35.46 mL of 0.1052M Na,5203 solution. A faded price label on the gallon bottle read S0.79. The density of the bleaching solution was 1.10 g mL-? E) Determine the volume of commercial bleaching solution present in the diluted bleaching solution titrated. f. Calculate the mass of commercial bleaching solution titrated. g. Determine the percent NaOCl in the commercial bleaching solution.3. A student followed the procedure of this experiment to determine the percent NaOCl in a commercial bleaching solution that was found in the basement of an abandoned house. The student diluted 50.00 mL of the commercial bleaching solution to 250 mL in a volumetric flask, and titrated a 20-mL aliquot of the diluted bleaching solution. The titration required 35.46 mL of 0.1052M Na,5203 solution. A faded price label on the gallon bottle read S0.79. The density of the bleaching solution was 1.10 g mL-? h. Calculate the mass of one gallon of the commercial bleaching solution. i. Calculate the cost of 100 g of the commercial bleaching solution. j. Determine the cost of the amount of commercial bleaching solution required to supply 100 g of NaOCl.What volume (in mL) of a 0.98 M HNO3 solution must be diluted to prepare 0.98 L of 0.28 M HNO3? Report your answer to 1 decimal place
- CALCULATE FINAL CONCETRATION INCLUDE UNITS AND 2 SIG FIGS A 43.5 mL sample of an 7.5 %(mm/vv) KBr solution is diluted with water so that the final volume is 215.5 mL.A 22.41 mL of NaOH solution is required to reach the phenolphthalein endpoint in the standardization with 0.276 g of solid, monoprotic primary standard acid (MW 128.33) in a 25.00 mL solution. 12.34 mLof the same NaOH solution was added to titrate 5 mL of vinegar solution to the endpoint. Calculate the mass of acetic acid in this vinegar solution (d = 1.005 g/mL).How many milligrams of solute are there in 100 uL of a 50mM NaCl solution (MW 58.44 g/mole)? Show your work and answer in milligrams.
- Would the following procedural errors result in an incorrectly high or low calculated percent NaOCl in the commercial bleaching solution? Briefly explain. a) A student failed to allow the volumetric pipet to drain completely when transferring commercial bleaching solution to the volumetric flask. b) A student blew the last drops of bleaching solution from the pipet into the Erlenmeyer flask when transferring diluted bleaching solution to the flask. c) A student began a titration with an air bubble in the buret tip. The bubble remained in the buret tip during the first titration, but it came out of the tip with the titrant released during the second titration. d) A student added diluted bleaching solution and HCl solution to aqueous KI solution in Erlenmeyer flasks 1 and 2 before beginning the titration in Erlenmeyer flask 1. What is a and b?The mass fraction of B in a solution is 0.17. Calculate, in g, the mass of the solution that contains 45 g of B. Use one decimal place in your answer.A prescription requires you to prepare 10 suppositories with 0.3 g of kematopril (density= 3.0 g/mL) each with cocoa butter (density= 0.9 g/mL) as a base. The mold you are using can create 2.0 g blank suppositories with cocoa butter. Determine the amount of base in grams that would be required to make each suppository. Answer: Each suppository requires ___________ g of cocoa butter