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What is the Molar Mass of Fe3+? How many ions does 1 mole of Fe3+ have? 

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Cyrielle Lorio
Cyrielle LorioLv10
9 Nov 2020
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Related questions

What is the molar mass of Fe3+? How many ions does it have and what is the mass of the ion in one mole of compound?

What is the molar mass of Fe3+? How many ions does it have and what is the mass of the ion in one mole of compound?

Given the following data, determine the mole ratio of iron (III) to oxalate (Fe3+:C2O42-) in a sample of an iron oxalate complex with the general formula Kz[Fex(C2O4)y].wH2O.

Mw(Fe3+) = 55.85 g/mol

Mw(C2O42-) = 88.02 g/mol

Step 1: Assume you have 100 g complex.

Enter your answers in the boxes provided to 3 significant figures. Do not enter units.

%m(Fe3+) = 11.0%

= 11.0 g in 100 g

%m(C2O42-) = 52.0%

= 52.0 g in 100 g

n(Fe3+) = m(Fe3+)/Mw(Fe3+)

= Answer __________ mol

n(C2O42-) = m(C2O42-)/Mw(C2O42-)

= Answer __________ mol

Step 2: Divide by smallest no. of moles (in this case Fe3+) to determine the ratios

Round your answer to the nearest whole number.

Ratio (C2O42-) = n(C2O42-)/ n(Fe3+) = Answer _________ = y

Ratio (Fe3+) = n(Fe3+)/ n(Fe3+) = Answer __________ = x

Therefore molar ratio of Fe3+:C2O42- = Answer _________ : Answer __________ = x : y

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