Which of the procedures, if either, is more accurate when making a 1/501/50 dilution of a solution? a)Transfer 1 mL1 mL with a pipet into a 50-mL50-mL volumetric flask. b)Both procedures have the same accuracy. c)Transfer 20 mL20 mL with a pipet into a 1-L1-L volumetric flask.   How can the accuracy of either procedure be improved? a)Instead of using a 1/501/50 dilution to make the solution, weigh out the material on a balance and transfer it directly to the volumetric flask. b)Use an Erlenmeyer flask instead of a volumetric flask. c)Calibrate each piece of glassware. d)Use a graduated cylinder instead of a pipet for the transfer.

2.00 mL OF 5.80 x10-"M AGNO g 245.0 mL of 3.35 X10 M NazS and + Na, Scaas 2 NANO3 tazy 248.19 1549 2709 2 Ag NO3 78.19 Nans Agzs 2 NANO3 inirial Change Final

4.87 mL of a dark solution with a dye concentration of 15.86 %m/v is diluted to a total  volume of 146. mL. what is the new concentration of solution in %m/v ?

1)An aqueous solution of methyl alcohol is made by transferring 26.4 mL of liquid methyl alcohol to a 300.mL volumetric flask,and then adding enough water to fill the flask to the mark.What is the volume/volume percentage of methyl alcohol in the solution? Volume/volume percentage =____% 2)An aqueous solution of methyl alcohol is made by transferring 29.6 mL of liquid methyl alcohol to a 500. mL volumetric flask,and then adding enough water to fill the flask to the mark.What is the volume /volume percentage of methyl alcohol in the solution? Volume/volume percentage =____%

A student needs 25.0 mL of 7.18x10 4 M FD&C Blue Dye No. 2 solution. If the student has 2.00 mM FD&C Blue Dye No. 2 stock solution to work with, how much of the 2.00 mM solution should be added to the 25.0 mL volumetric flask? Hint, 2.00 mM is 0.00200 M. O 0.1114 mL O 7.474 mL O 1.114 mL 8.974 mL 2.786 mL

Concentrated Standard Solution: 3.0168 weighed mass (NH4)2SO4-FeSO4-6H2O g in L of solution 99.70 purity (NH4)2SO4-FeSO4-6H2O Volume 2.000L Diluted Standard Solution mass (NH4)2SO4-FESO+-6H2O per L of solution mg/L(or ppm)** Fe concentration (using % purity) ppm

The following volumes of 0.000300 M SCN are diluted to 15.00 mL. Determine the concentration of SCN in each sample after dilution. These values will be used during the experiment. To enter exponential values, use the format 1.0e-5. Sample 0.000300 M SCN (mL) [SCN'] (M) 1 1.50 3.50 7.00 4 10.00 3.

An aqueous solution at 25 °C has a H,0' concentration of 7. x 10 °M. Calculate the OH concentration. Be sure your answer has the correct number of significant digits. Show all 9 Discussion week.docX pen dayum.pdf POF 3:51 PM ヘ梦の P Type here to search 5/4/2021 hp 24 to tyo insert prt sc delete 144 esC & 7 % 4. backspace home E R Y

Can I get a more in-depth method on the set up. Having trouble setting up the problems when it's giving two units such as mg per mL?

8 = filled CHM-202 Lab 1 Solids and Solutions Rev 1 G6-2022 Results: 1. Models of Crystalline Unit Cells Atomic Radius (radius of styrofoam ball) Volume of one atom (one ball, 4/3r¹) Measured unit cell length (1) [1.3] No. Atoms per cell [1.3] Ratio of 1/r [1.3] Geometric unit cell length (1) [1.5a] Volume of atoms in cell [1.5c] Total 3 Volume of Unit Cell [1.5c] Percent vol filled [1.5d] Percent free space. [1.5d] I atom Simple Cubic SC 6.15mm 118 6.9 172 Raw Data (Temperature vs. Time) Trial Time CHM-202 Lab 2 Freering Point Depression Rev2 06-2022 232.6 Temp Time d= 6.9 r = 3.24 Sum v=172²³² Body Centered Cubic BCC 8 lan a atom 2.3 7.96 344 531.45 B. Cyclohexane Solutions (Trial 4 if needed) Temp Time (include units!) (include units!) Face Centered Cubic FCC (CCP) 10.8cm 4 atom 7/12 3.13 Temp 5.26 688 1259-73 Time the pieces are not Temp