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A 25.00 mL sample containing Fe3+ was treated with 10.00 mL of 0.0367M EDTA to complex all of the Fe3+ and leave excess EDTA in solution. The excess EDTA was then titrated, requiring 2.37 mL of 0.0461M Mg2+ standard solution.
A) What kind of titration is this?
B) What was the concentration of Fe3+ in the original sample? No units & correct sig figs
where a is constant and -infinity
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1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID.
Which of the following m/z values is the molecular ion for 2-butanone A. 15 B. 29 C. 43 D. 57 E. 72
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