What is the mass of 5 moles of Fe2O3 ?

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1 Answer
Hihi
Feb 28, 2018

#798g#

Explanation:

Molar mass of different substances:
Fe: #55.8 gmol^-1#
O: #16.0 gmol^-1#

Molar mass of #Fe_2O_3#
#=55.8*2+16*3#
#=159.6 gmol^-1#

Which means that for each mole of #Fe_2O_3#, it weighs 159.6g

Mass of 5 moles of #Fe_2O_3#
#=159.6*5#
#=798g#

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