Question

160 PDF.js viewer Page 1 of 3 Segment 12 Checkpoint #1 Date 11/08/19 Names: Last Name First Name PLEASE Homer PRINT neck Hush Alphabetical Wilson Kades Order by Wisin, ter Last name Your Problem (2 points) 1. Exactly 25 mL of 0.0545 M (UO),(PO.), Solution is put into a 250 mL volumetric flask and to the calibration mark. What is the concentration of the diluted solution? MUST SHOW WORK BELOW FOR ANY CREDITT Answwer belo Page 2 of 3 PDF.js viewer 2. What mass of uranium (in mg) is contained in 1 ml of 0.0545M (UO),(PO.), solution? MUST SHOW WORK BELOW FOR ANY CREDIT Answwer belo (correct sig fig.)

Answer 1

Civen concentration of (Uo,), (PO) 0.0545 M volumenital)25 M Voume iin) 250 ml we knao that in dilution, males o solute remain Same after the dilu han ao it wa belore the diution. male o Soluke behore dilution - mole o Solote after dilufn M,V, M2 Vi M2 X 250 mt OOS4S M X 25 m) M2 250 S.45X10 M concentration (U0), (PDu) 2 valume ml o001 L nolaity x volumeLin) So, mol (Uo(Po) O OS4S M x 0.001 L S45X10mol mol ofu mol (U0,) ( Pou) S-5K10mol (uo) CPo) contain 2xs.45xIs mol ofu naw cantain So, mol o 'U': 16.25 X10-mol Mu of U 231 3/mal mol x Ms mas o uanium : 16.1 x 10 malX 22 9/mnol 3 831 1 X10 4 x108 40 mg