question archive Which of the substances have a standard heat of formation (Δ?????f) of zero? a) Fe at 1200 ?Celsius b) O2(g) at 25
Subject:ChemistryPrice: Bought3
Which of the substances have a standard heat of formation (Δ?????f) of zero?
a) Fe at 1200 ?Celsius
b) O2(g) at 25.0 ?Celsius and 1 atm
c) C2H6(g) at standard conditions
d) Cl2(g) at 2 atm