What mass of #"ferric oxide"# would result from oxidation of a #58.7*g# iron metal. What mass of dioxygen is required?

1 Answer
anor277
Sep 28, 2017

Approx....#81*g#.....

Explanation:

#Fe_2O_3# has a molar mass of #159.69*g*mol^-1#..

We work from a molar quantity with respect to iron of #(58.7*g)/(55.8*g*mol^-1)=1.05*mol#, and thus with respect to oxygen, there are is #1.05*molxx3/2xx16*g*mol^-1=25.25*g# mass.

And so we just sum the masses, i.e. #55.8*g+25.25*g=??*g#

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