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11.5 g of KOH (s) is dissolved up to 250.0 mL in water. What is the...
please help!! thank you 11.5 g of KOH (s) is dissolved up to 250.0 mL in water. What is the molarity of this solution? Molarity of first solution: Enter your answer here M KOH If we then add an additional 2.750 L of water to the solution what is the new molarity? Molarity of second solution: Enter your answer here M KOH For this second solution calculate the pH, pOH and [H3O+). pH = Enter your answer here pOH =...
please also calculate pH, pOH, and [H3O+] 11.5 g of KOH (s) is dissolved up to 250.0 mL in water. What is the molarity of this solution? Molarity of first solution: Enter your answer here M KOH If we then add an additional 2.750 L of water to the solution what is the new molarity? Molarity of second solution: Enter your answer hace M KOH For this second solution calculate the pH, POH and [H3O+]
Q3.1 3 Points A 12.0 M stock solution of HCl(aq) is diluted with water to give 500.0 ml of 0.155 M HCl(aq). What volume of the initial stock solution is used in ml? Enter your answer here mL Q3.2 6 Points A sample of 75.52 g of xylose (C5H1005) is dissolved in 275.0 mL of water. If the density of water is 1.00 g/ml What is the m/m % of xylose in the solution? Enter your answer here What is...
0.3926 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 4.00 mL of this solution is pipetted into a 50.0 mL volumetric flask and diluted with water to the mark. What is the final salicylic acid concentration?
0.3856 g of salicylic acid is dissolved in water and made up to 250.0 mL in a volumetric flask. Then, 3.00 mL of this solution is pipetted into a 50.0 mL volumetric flask and diluted with water to the mark. What is the final salicylic acid concentration?
30.0 mL of a 3.0 KOH solution are diluted to 250.0 mL. what is the molarity of the diluted KOH solution?
5) 96 mg ofsolid KOH was completely dissolved in 3.5 L ofpure water. What is the concentration of K and OH in the solution in units of ug/L and M? What is the pH, pOH and total number of atoms of OH' in the solution? Use Avogadro's number as 6.022*1023 atoms/mol
1.what will be the molarity of naoh solutin if u mix 20 ml of naoh and 80 ml h2o 2. 100g koh is dissolved in 250 ml water . calculate molality of koh in that solution molecular nass of koh is 56.1g/mol dennsity of water is 1.0 noul WIheory or prnciple Calculate the pH of 0.055 M HCl solution 14. Calculate the pH of 0.02 M NaOH solution 15. bal Calculate the pOH of 0.04 M Acetic acid, Ka of...
1.)A 1.998-g sample containing Cl' and CIO," was dissolved in sufficient water to give 250.0 mL of solution. A 50.00-ml aliquot required 13.97 mL of 0.08551 M AgNO3 to titrate the CI'. A second 50.00-ml aliquot was treated with V2(SO4)3 to reduce the CIOA to Cl": CIO:+4V2(SO)) + 4H20 C1 + 1250,2 +8VO2 + 8H Titration of the reduced sample required 40.12 mL of the AgNO, solution. Calculate the percentages of Cl' and CIO, in the sample.
When 38.5 g of NaOH dissolved in water to form 772.9 mL of solution, what is the molarity of the solution? Enter only the numeric value for your answer