A saturated solution of KNO3 was prepared at 25° Cby dissolving 12.050 g KNO3 in water and the total volume of the solution is 10.5 mL. Determine the moles of KNO3 in the solution and enter it below. 0.12 X moles This number should have 2 * significant figures. (enter in the number of sig figs in the box). Now determine the concentration of Ktand NO3 in the solution. Enter these values below. [K*]= 11.43 X M [NO3 ]= 11.43 X M These numbers should have 2 X significant figures. (enter in the number of sig figs in the box).

A saturated solution of KNO3 was prepared at 25° Cby dissolving 12.050 g KNO3 in water and the total volume of the solution is 10.5 mL. Determine the moles of KNO3 in the solution and enter it below. 0.12 X moles This number should have 2 * significant figures. (enter in the number of sig figs in the box). Now determine the concentration of Ktand NO3 in the solution. Enter these values below. [K*]= 11.43 X M [NO3 ]= 11.43 X M These numbers should have 2 X significant figures. (enter in the number of sig figs in the box).

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 47E

See similar textbooks

Similar questions

Solutions of hydrogen in palladium may be formed by exposing Pd metal to H2 gas. The concentration of hydrogen in the palladium depends on the pressure of H2 gas applied, but in a more complex fashion than can be described by Henry's law. Under certain conditions, 0.94 g of hydrogen gas is dissolved in 215 g of palladium metal (solution density = 10.8 g cm3). (a) Determine the molarity of this solution. (b) Determine the molality of this solution. (c) Determine the percent by mass of hydrogen atoms in this solution.
Insulin is a hormone responsible for the regulation of glucose levels in the blood. An aqueous solution of insulin has an osmotic pressure of 2.5 mm Hg at 25C. It is prepared by dissolving 0.100 g of insulin in enough water to make 125 mL of solution. What is the molar mass of insulin?
A patient has a “cholesterol count” of 214. Like manyblood-chemistry measurements,this result is measured inunits of milligrams per deciliter (mgdL1). Determine the molar concentration of cholesterol inthis patient’s blood, taking the molar mass of cholesterolto be 386.64gmol1. Estimate the molality of cholesterol in the patient’sblood. If 214 is a typical cholesterol reading among men inthe United States, determine the volume of such bloodrequired to furnish 8.10 g of cholesterol.
Solutions Introduced directly into the bloodstream have to be isotonic with blood; that is, they must have the same osmotic pressure as blood. An aqueous NaCl solution has to be 0.90% by mass to be isotonic with blood. What is the molarity of the sodium ions in solution? Take the density of the solution to be 1.00 g/mL.
Silver ions can be found in some of the city water piped into homes. The average concentration of silver ions in city water is 0.028 ppm. (a) How many milligrams of silver ions would you ingest daily if you drank eight glasses (eight oz/glass) of city water daily? (b) How many liters of city water are required to recover 1.00 g of silver chemically?
Explain why the distinction between solute and solvent is not clear for some solutions.
Lead poisoning has been a hazard for centuries. Some scholars believe that the decline of the Roman Empire can be traced, in part, to high levels of lead in water from containers and pipes, and from wine that was stored in leadglazed containers. If we presume that the typical Roman water supply was saturated with lead carbonate, PbCO3 (Ksp = 7.4 1014), how much lead will a Roman ingest in a year if he or she drinks 1 L/day from the container?
6-21 Are mixtures of gases true solutions or heterogeneous mixtures? Explain.
Mixtures of gases are always true solutions. True or false? Explain why.