Question #67d21

1 Answer
anor277
Feb 11, 2017

Approx. #3.5xx10^3*g#.......

Explanation:

#"Number of moles of ferric oxide"# #=# #"Mass"/"Molar mass"#

#=(5000*g)/(159.69*g*mol^-1)=31.3*mol#.

But in each mole of #Fe_2O_3#, clearly there are 2 moles of iron atoms, and 3 moles of oxygen atoms.

And thus #"mass"# #=# #"Molar mass"xx"number of moles"#

#=31.3*molxx2xx55.85*g*mol^-1=# #??g#

How many grams of oxygen.

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