The moles of iron in the sample is 4.66 moles.
d. 4.66 moles
What is a mole?
It is defined as exactly [tex]6.022*10^{23}[/tex] elementary entities, which may be atoms, molecules, ions, or electrons.
Given:
[tex]2.806 * 10^{24}[/tex]atoms of iron (Fe)
To find:
Moles of iron= ?
[tex]1 mole = 6.022*10^{23} atoms\\\\6.022*10^{23} atoms =\frac{1}{6.022*10^{23} } moles[/tex]
Thus, For [tex]2.806 * 10^{24}[/tex] atoms of iron;
[tex]2.806 * 10^{24}= \frac{1}{6.022*10^{23}} * 2.806 * 10^{24} moles\\\\0.465 *10^1\\\\4.66 moles[/tex]
Therefore, the moles of iron in the sample is 4.66 moles.
Hence, correct option is d.
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