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Is
it simply a 2:1 ratio since the M of the solution transferred stays
the same...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a spectrophotometer. The standard solutions are prepared as the following: 2.00 mL (the same procedures for 3.0 mL, 4.00 mL, 6.00 mL, 7.00 mL) of the stock solution of 1.00 M NİSO4 is transferred into a 25-mL volumen flask and diluted by adding distilled water to the mark line. The spectrophotometer is calibrated at the wavelength of 635 nm. The absorbance (A) readings and the...
1. Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted...
1. Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, (OH), for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV = CV, may be applied here). (1.0 point] Solution Calculated [OH'] Table 13-2: Preparation of...
Use the References to access important values if needed for this question. Two 1-L beakers, A...
Use the References to access important values if needed for this question. Two 1-L beakers, A and B, each containing a different aqueous solution of maltose (a nonvolatile sugar with MW-342.30 g/mol) are placed together in a box, which is then sealed. The temperature remains constant at 20 °C. Initially, there is 740 mL of solution in A and 140 mL of solution in B. As the solutions stand in the sealed box, their volumes change slowly for a while....
it only gives the ratio and expects us to answer the question from there. (e) The...
it
only gives the ratio and expects us to answer the question from
there.
(e) The %mass ratio of Cl(heated) to Cunheated) obtained from the analysis of the Co-complex we synthesized in the lab was found to be 1.5/1. Express this as a ratio of integers 1.5 What information does this ratio provides regarding both the amount and location of chloride in the Co-complex? Cl) amount Clu (m) location number coordinated and number not coordinated () In Co-analysis lab a...
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased...
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased decreased not affected 2. A supersaturated solution may be prepared by slowly cooling down a solution saturated at an elevated temperature. TRUE FALSE 3. A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE FALSE 4. When sugar & water are mixed, a clear liquid results. In this scenario, the sugar is considered a Solute Solution Solvent All of...
QUESTION: Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted...
QUESTION: Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, [OHlo, for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV C2V2 may be applied here). [1.0 point] 1. Solution Calculated [OH] Table 13-2: Preparation of...
Two 1-L beakers, A and B, each containing a different aqueous solution of urea (a nonvolatile...
Two 1-L beakers, A and B, each containing a different aqueous solution of urea (a nonvolatile nonelectrolyte with MW = 60.06 g/mol) are placed together in a box, which is then sealed. The temperature remains constant at 20 °C. Initially, there is 270 mL of solution in A and 690 mL of solution in B. As the solutions stand in the sealed box, their volumes change slowly for a while. When they stop changing, beaker A contains 490 mL and...
Table A. Preparation of Standard solutions of FeSCN2+ 1.0 M HNO3 0.002 M 0.200 M Solution...
Table A. Preparation of Standard solutions of FeSCN2+ 1.0 M HNO3 0.002 M 0.200 M Solution KSCN (mL) Fe(NO3)3 (mL) 0.5 5 [FeSCN2+] (mol/L)* 1 4.0x10^-5 Add 1.0 M 2 1.0 5 8.0x10^-5 HNO3 3 1.5 5 1.2x10^-10 4 2.0 5 1.6x10-4 to each to adjust the volume to 25 mL. 5 2.5 5 2.0x10-4 * Calculate the concentrations of FeSCN2+ in each beaker, assuming that all SCN-ions exist as FeSCN2+. In other words, [FeSCN2+] (in Soln 1) = [SCN-]...
a.)Suppose you were preparing 1.0 L of a bleaching solution in a volumetric flask, and it...
a.)Suppose you were preparing 1.0 L of a bleaching solution in a volumetric flask, and it calls for 0.26 mol of NaOCl. If all you had available was a jug of bleach that contained 0.74 M NaOCl, what volume of bleach would you need to add to the volumetric flask before you added enough water to reach the 1.0 L line? Express the volume in milliliters to two significant figures b.) You need to prepare a 2.40 M solution of...
The following five beakers, each containing a solution of sodium chloride (NaCl, also known as table...
The following five beakers, each containing a solution of sodium chloride (NaCl, also known as table salt), were found on a lab shelf: Beaker Contents 1 200 mL. of 1.50 M NaCl solution 2 100 mL. of 3.00 M NaCl solution 3 150 mL. of solution containing 22.5 g of NaCl 4 100 mL. of solution containing 22.5 g of NaCl 5 300 mL. of solution containing 0.450 mol NaCl Arrange the solutions in order of decreasing concentration. Rank from...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a spectrophotometer. The standard solutions are prepared as the following: 2.00 mL (the same procedures for 3.0 mL, 4.00 mL, 6.00 mL, 7.00 mL) of the stock solution of 1.00 M NİSO4 is transferred into a 25-mL volumen flask and diluted by adding distilled water to the mark line. The spectrophotometer is calibrated at the wavelength of 635 nm. The absorbance (A) readings and the...
1. Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, (OH), for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV = CV, may be applied here). (1.0 point] Solution Calculated [OH'] Table 13-2: Preparation of...
Use the References to access important values if needed for this question. Two 1-L beakers, A and B, each containing a different aqueous solution of maltose (a nonvolatile sugar with MW-342.30 g/mol) are placed together in a box, which is then sealed. The temperature remains constant at 20 °C. Initially, there is 740 mL of solution in A and 140 mL of solution in B. As the solutions stand in the sealed box, their volumes change slowly for a while....
it
only gives the ratio and expects us to answer the question from
there.
(e) The %mass ratio of Cl(heated) to Cunheated) obtained from the analysis of the Co-complex we synthesized in the lab was found to be 1.5/1. Express this as a ratio of integers 1.5 What information does this ratio provides regarding both the amount and location of chloride in the Co-complex? Cl) amount Clu (m) location number coordinated and number not coordinated () In Co-analysis lab a...
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased decreased not affected 2. A supersaturated solution may be prepared by slowly cooling down a solution saturated at an elevated temperature. TRUE FALSE 3. A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE FALSE 4. When sugar & water are mixed, a clear liquid results. In this scenario, the sugar is considered a Solute Solution Solvent All of...
QUESTION: Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, [OHlo, for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV C2V2 may be applied here). [1.0 point] 1. Solution Calculated [OH] Table 13-2: Preparation of...
Table A. Preparation of Standard solutions of FeSCN2+ 1.0 M HNO3 0.002 M 0.200 M Solution KSCN (mL) Fe(NO3)3 (mL) 0.5 5 [FeSCN2+] (mol/L)* 1 4.0x10^-5 Add 1.0 M 2 1.0 5 8.0x10^-5 HNO3 3 1.5 5 1.2x10^-10 4 2.0 5 1.6x10-4 to each to adjust the volume to 25 mL. 5 2.5 5 2.0x10-4 * Calculate the concentrations of FeSCN2+ in each beaker, assuming that all SCN-ions exist as FeSCN2+. In other words, [FeSCN2+] (in Soln 1) = [SCN-]...
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