6. If 2.0 mL of 250% (yuyg) ŅeQ solution is diluted to 450.0 mL, what is...
A 155-ml sample of an 8.0 M NaCl solution is diluted to 2.0 L . What volume of the diluted solution contains 10.8 g of NaCl? (Hint: Figure out the concentration of the diluted solution first.)
A 2.0 M stock solution of Tylenol was diluted as follows: 15.000 mL of stock solution was added to a 250-ml volumetric flask. Water was added to the flask until the solution's meniscus was at the line on the neck of the flask. 5.000 mL of solution from the 250-ml volumetric flask was added to a 100-ml volumetric flask. Water was added to the flask until the solution's meniscus was at the line on the neck of the flask. Calculate...
A 13.0 mL aliquot of a flouride sample solution was diluted to 250 mL in a volumetric flask. The F- concentration of this DILUTED sample was determined with a F- ion selective electrode and found to be 3.1 mg/L. What is the concentration of F- in the original, undiluted sample?
20.0 mL of a 0.750 M solution is diluted to 80.0 mL. Then, 40.0 mL of this new solution is diluted to 250 mL. Finally, 25.0 mL of this solution is diluted to 175 mL. What is the concentration in moles per liter of the final solution?
6. What is the final molarity when 5.00 mL of 2.0 M CuCl2 (aq) is diluted to 100. mL?
7.920 g of potassium oxalate is dissolved in water to make 450.0 mL of solution. What is the molarity of the potassium oxalate solution ?
7-7 If 35.0 mL of a 2.0 M solution of NaBr (solution A) was diluted to 500. mL (solution B) and 20.0 mL of this solution were then diluted to 500. mL (solution C), what would be concentration of solution C? 7-8. Which solution has the higher boiling point, 0.500 M NaCl in water or 0.400 M CaBr2 in water? Explain. 7-9.Can a solution have a weight /volume % greater than 100%? Explain. Cr(NO3)s(aq) +Na2Se (aq) - Cr2Se3(s)+ NaNO3(aq) KBr(aq)...
A solution is made by mixing 50 mL of 2.0 M K2HPO4 and 25 mL of 2.0 M KH2PO4. The solution is diluted to a final volume of 200 mL. What is the pH of the final solution?
20.5 g of chromic acid are dissolved in a 250 mL volumetric flask. a) what is the concentration of the solution? b) If 10.1 mL of the solution in a) is diluted with 75.5 mL of water, what is the resulting concentration? c) If 20.5 mL of the chromic acid solution in a) are titrated with 25.0 mL of sodium hydroxide solution, what is the molarity of the NaOH solution? (need balanced equation)
20.5 g of chromic acid are dissolved in a 250 mL volumetric flask. a) what is the concentration of the solution? b) If 10.1 mL of the solution in a) is diluted with 75.5 mL of water, what is the resulting concentration? c) If 20.5 mL of the chromic acid solution in a) are titrated with 25.0 mL of sodium hydroxide solution, what is the molarity of the NaOH solution? (need balanced equation)