Explanation:
1 miole of Fe2O is 6.22 × 10^-23
5mole of Fe2O = 5×6.22×10^-23
=31.1×10^-23
Mass of 5 moles of [tex]Fe_2O[/tex] is 636 g.
Formula for the calculation of mass is as follows:-
[tex]Number\ of\ mole=Mass/Molar mass[/tex].......(1)
The molar mass of [tex]Fe_2O[/tex]is [tex]2\times55.6\ g+16\ g=127.2 \g[/tex]
So ,the mass of 5 moles of [tex]Fe_2O[/tex]is as follows:-
[tex]5\ mol=Mass/127.2\ g/mol\\5\ mol/times127.2\ g/mol=Mass\\636\ g=Mass[/tex]
Hence, the mass of 5 moles of [tex]Fe_2O[/tex] is 636 g.
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