Please help with this question. It takes about 4.1 muL (microliters) of a copper

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Please help with this question.

It takes about 4.1 muL (microliters) of a copper solution containing 0.4412 g of copper ion per 100 mL to make a spot approximately 0.598 cm in diameter. Calculate the micrograms of copper ion in the spot. Using the "ruler" in the picture of the chromatogram and measuring with an accuracy of.1 unit, calculate the retardation factor (Rf) for compound C. MEASUREMENTS AND CALCULATIONS How far did compund C move? "units". At the same time, how far did the solvent move? "units". What is the Rf for compound C? How many mug (micrograms) of copper ion are in the spot? mug.

Explanation / Answer

1a. 4.75 - 1.25 = approximately 3.5 units
1b. 5.75 - 1.25 = approximately 4.5 units
1c Rf = distance of spot / distance of solvent = 3.5/ 4.5 = 0.78
2 .4412g copper per 100 mL = .004412g per mL. 1uL = 1000 mL. .004412g / 1000 = .000004412g per uL. .000004412g * 4.1 = .0000181g * 1000 = .0181 ug of copper.

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