A sample of an iron alloy contains 90.2 g Fe, 2.15 g C, and 1.01 g Cr. Calculate the percent by mass of each component present in the alloy sample. % Fe % C % Cr

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A: Answer:

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A: To answer: Major Entities present in Cu(s) a) Cu (s), H2O (l) b) Cu2+ (aq), H2O (l)

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Q: Part A Iron is mined from the earth as iron ore. Common ores include Fe2 O3 (hematite), Fe3 O4…

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Q: Which compund is optically inactive?

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Q: (b) Cr,O; + Fe2+ Cr** + Fe*

A:

Q: 1. Fe:Os (I) + CO (g) –> Fe (1) + CO2 (g)

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Q: Calculate the mass percent composition of iron for each iron ore: Fe2O3Fe2O3 (hematite), Fe3O4Fe3O4…

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Q: How many mg of iron are present in a 236.5 g ore sample containing 0.15% iron by mass?

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Q: Calculate the percentage of Fe in pure iron(II) ammonium hexahydrate: (NH4)2[Fe(SO4)2] x 6H2O

A: The solution is as follows :

Q: . K3PO4 + Fe(NO2)2

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.