Question

A 10.00-g sample that contains an analyte is transferred to a 250-mL volumetric flask and diluted to volume. When a 10.00 mL aliquot of the resulting solution is diluted to 25 ml it gives a signal of 0.235 (arbitrary units). A second 10.00 mL portion of the solution is spiked with 10.00 mL of a 1.00-ppm standard solution of the analyze and diluted to 25.00 mL. The signal for the spiked sample is 0.502. Calculate the weight percent of analyte in the original sample. Assume the density of the solution is 1 g/mL.

Answer 1

Answer:

Given that

A 10.00-g sample that contains an analyte is transferred to a 250-mL volumetric flask and diluted to volume.

Ansces 010f sofd dissolved n 260 mL and a lo.oo mL of a .0o Ppm aalte soluon, Both te afguots are dated to 25:00 mL. the second auo Contahns the aralyte psert n the ffst ardyte also and Second Se 01502-01235 ief g solution

2 The abscobance is dect PoRosico te Concentsation A % Solution gives an absC,bane of a267. 0 1267