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Anna007 [38]
2 years ago
10

Referring to the ground state orbital diagram of Fe and Fe3+, explain why iron is considered a ferromagnetic element.

Chemistry
1 answer:
krok68 [10]2 years ago
7 0

Iron having Z=26 with electronic configuration as [Ar]3d^64s^2 has 6 electrons in the 3d shell wherein 5 electrons are aligned parallely and 1 electron  as antiparallel.

Fe^3^+ having electronic configuration as [Ag]3d^5 has 5 electrons, all aligned in the same direction.

Iron, when kept in external magnetic field, the magnetic domains of the atom get aligned in one direction that means it becomes parallel and they remain parallel even after removing the magnetic field therefore, it is considered as ferromagnetic.

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Answer:

0.151 mol

Explanation:

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number of moles = mass/molar mass

n = m/M = 15.3 g/(101.1 g/mol) = 0.151 mol

4 0
2 years ago
If water (p=998 kg/m3, u = 10-3 Pa.s) flows through a 50 m Pa.s) determine the velocity of carbon tetrac me the velocity of carb
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Explanation:

As it is given that both have same dynamic characteristics.

Therefore,      Re_{water} = Re_{CCl_{4}}

    \frac{\rho_{water} \times \nu_{water} \times D_{water}}{\mu_{water}} =  \frac{\rho_{CCl_{4}} \times \nu_{CCl_{4}} \times D_{CCl_{4}}}{\mu_{CCl_{4}}}

Hence, putting the given values into the above formula as follows.

   \frac{998 kg/m^{3} \times 2 m/s \times 50 mm}{10^{-3}Pa.s} =  \frac{1590 kg/m^{3}} \times \nu_{CCl_{4}} \times 60 mm}{0.958 \times 10^{-3}}    

                   \nu_{CCl_{4}} = 1.002 m/s

Thus, we can conclude that the velocity of carbon tetrachloride in the given conditions is 1.002 m/s.

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