An Analyst Prepares a Diluted Standard for Use in a Post-Mortem

Multiple Choice

An analyst prepares a diluted standard for use in a post-mortem toxicological assay. The analyst dilutes 2.0 uL of a commercial standard, 1.00 mg/mL, to 10.00 mL in a type A volumetric flask. A syringe is used to draw out and deliver the 2.0 uL. The absolute uncertainties of the equipment are:
Volumetric flask: 0.08 mL
Syringe: 0.10 uL
Commercial standard: 0.050 mg/mL
What is the final concentration of the diluted solution in ug/mL? WATCH THE UNITS and report to the correct number of significant figures

A) 20.0
B) 0.0020
C) 2.00
D) 120.0
E) 0.120
F) 1.20