If 85.00mL of 4% KCl is made using 35.00mL of stock solution, what was the concentration...
What is the concentration (M) of KCl in a solution made by mixing 25.0 mL of 0.100 M KCI with 50.0 mL of 0.100 M KCI? A) 0.100 B) 0.0500 C) 0.0333 D) 0.0250 E) 125
1. What is the molar concentration of a solution that contains 10 grams of KCl in 500 ml of DI water? (MW of KCI = 74 g/mol) a. What is the osmolarity of this solution? b. What is the tonicity of this solution? c. What would happen to a normal red blood cell that was put into this solution?
If 0.80 L of a solution contains 4.3 g of KCl, what is its molar concentration?
1. You made a 0.3% KCl solution in Professor Fiorni’s lab but need to determine the Molarity of it for a paper. (MW of KCl is 74.55 g/mol) 2. You are working as a research technician for Pfizer and in your lab, one solution of hydrochloric acid has a pH of 3.2, while another solution of sodium hydroxide has a pH of 9.7. Calculate the concentration of hydrogen ions in each solution.
Question 6 Using stock solutions to make up a solution: from final concentration to volume You need to digest a sample of DNA with a restriction enzyme. You will do this reaction later in the semester. The buffer for this reaction has a final concentration of 40 mM Tris, pH 7.5, 10 mM MgCl2 and 50 mM KCl. You have the following stock solutions: 0.5 M Tris, pH 7.5, 1 M MgCl2 and 2 M KCl. How would you make...
1.What is the final concentration of a solution of KCl that is prepared by adding 46mL of a 2.98M KCl solution to a flask for a final volume of 245 mL? 2.What volume( in mL) of a 1.89M solution of NaF is needed to prepare 406mL of a 0.35M solution of NaF? 3.Calculate the mass of Al metal needed to react with 87 mL of a 3.18M solution of HNO3. Al(s) + HNO3(aq) --> Al(NO3)3 + H2(g) ( unbalanced) 4.Calculate...
Calculate the concentration of an aqueous KCl solution if 246 mL of the solution gives 28.5 g of AgCl when treated with excess AgNO3. The equation for the reaction is KCl(aq) + AgNO3(aq) ----> AgCl(s) + KNO3(aq)
35) Calculate the concentration of a KCl solution prepared by adding 200 mL of water to 100. mL of 12% KCl solution.
Calculate the concentration of an aqueous KCl solution if 265 mL of the solution gives 31.4 g of AgCl when treated with excess AgNO 3. The equation for the reaction is KCl( aq) + AgNO 3( aq) ----> AgCl( s) + KNO 3( aq)
Given 25 ml of a KCl solution with a concentration of 0.38 M and 18 ml of a solution of CaCl2 with a concentration of 0.19 M, what amount of each solution you should use to make 40 ml of solution with [Cl-]=0.30 M ?