In beaker Y, a blue solution was prepared by completely dissolving 10.0 g of a non-volatile blue powdered solid in 100.0 mL of water. A 20.0 mL aliquot from the solution was obtained and placed in beaker Z. Both beakers were left to dry completely, after which the masses of the residue were weighed. Which of the following statements is TRUE? Select one: O a. The color of solution in Y is darker than Z before evaporation. O b. Solutions in Y and Z have the same concentration before evaporation. O c. Residue in beakers Y and Z will have the same mass after evaporation. O d. The density of solution in Y is larger than Z before evaporation. 노 15

In beaker Y, a blue solution was prepared by completely dissolving 10.0 g of a non-volatile blue powdered solid in 100.0 mL of water. A 20.0 mL aliquot from the solution was obtained and placed in beaker Z. Both beakers were left to dry completely, after which the masses of the residue were weighed. Which of the following statements is TRUE? Select one: O a. The color of solution in Y is darker than Z before evaporation. O b. Solutions in Y and Z have the same concentration before evaporation. O c. Residue in beakers Y and Z will have the same mass after evaporation. O d. The density of solution in Y is larger than Z before evaporation. 노 15

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Hydrobromic acid can be purchased as 50.0% solution. The density of this solution is 1.07 g mL-1. What is the molar concentration of hydrobromic acid in this solution? The molar concentration = i M
In no morethan 1000 words. Propose a procedure in preparing a 500 mL 1 M sodium hydroxide solution using the following materials, reagents, glass wares, and instruments. (Show necessary calculations): Materials/Glass wares:• 500 mL beaker• 500 mL volumetric flask• Weigh boat Reagents:• Distilled water• 300 g NaOH pellets Instruments:• Analytical balance.
100 cm3 0.1 M NaH2PO4 solution is mixed with 150 cm3 0.2 M H3PO4 solution. What are the totalconcentrations of Na+, H+ and PO3−4in the mixed solution?
What weight of KCN is equivalent to 30.00 mL of AgNO3 solution containing 15.00 g/liter (a) by the Volhard method for cyanide.
Solid potassium chromate is slowly added to 125 mL of a 0.440 M barium nitrite solution until the concentration of chromate ion is 0.0127 M. The percent of barium ion remaining in solution is %?
1
2. Solid lead(II) cyanide is slowly added to 125 mL of a 0.497 M ammonium phosphate solution until the concentration of lead ion is 0.0438 M. The percent of phosphate ion remaining in solution is %.
1. Solid potassium fluoride is slowly added to 75.0 mL of a 0.327 M barium nitrite solution until the concentration of fluoride ion is 0.0685 M. The percent of barium ion remaining in solution is %.
2. How many ml of 0.280 M barium nitrate are required to precipitate as barium sulfate all the sulfate ions from 25.0 ml of 0.350 M aluminum sulfate? Ba(NO,)l1ag) + Al:(So.)t4) 0 Baso4) + AI(NO,)a{a9)
Calculate the molarity of the solution obtained by diluting 18.7 mL of 0.462 M sodium sulfate to 0.467 L
A vinegar solution was prepared by diluting 25.00 mL of vinegar to 250.0 mL. From this solution, 50.00 mL portion was taken, and this required 30.00 mL of 0.1000M NaOH solution to reach neutralization end point. What is the percentage (w/v) of HOAc in the sample? Mol wt HOAc = 60.0 g/mol
25 mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20 mL solution taken from here and the I2 released is titrated with 35.5 mL of 0.0409 M NaS2O3. Accordingly, calculate the weight percent by volume of NaOCl in the sample. (MaNaOC:74,4 g/mol)