Be sure to answer all parts. Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe202) is: 4 Fe(s) + 3 02(g)→ 2 Fe,O3(s) AHxn =-1.65 x 103 kJ %3D (a) What is the AHxn when 0.250 kg of iron rusts? x 10 kJ (b) How much rust forms when 7.00 x 10' kJ of heat is released? x 10 g Fe,03

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Chapter1: Chemical Foundations
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Be sure to answer all parts.
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of
dollars every day. Although the actual process also requires water, a simplified equation (with rust
shown as Fe,03) is:
4 Fe(s) +3 O2(g) → 2 Fe,O3(s)
AH =
-1.65 x 10 kJ
%3D
rxn
(a) What is the AHn when 0.250 kg of iron rusts?
rxn
x 10
kJ
(b) How much rust forms when 7.00 x 10° kJ of heat is released?
x 10
g Fe,O3
Transcribed Image Text:3 attempts left Check my work Be sure to answer all parts. Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe,03) is: 4 Fe(s) +3 O2(g) → 2 Fe,O3(s) AH = -1.65 x 10 kJ %3D rxn (a) What is the AHn when 0.250 kg of iron rusts? rxn x 10 kJ (b) How much rust forms when 7.00 x 10° kJ of heat is released? x 10 g Fe,O3
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