The ∆Hfº of MgO is –602 kJ•mol‒1. When 20.15 g MgO is decomposed at constant pressure according to t — Thermochemistry Chemistry Question
Question
The ∆Hfº of MgO is –602 kJ•mol‒1. When 20.15 g MgO is decomposed at constant pressure according to the equation below, how much heat will be transferred?
2 MgO(s) 2 Mg(s) + O2(g)
A.
1.20 × 10^3 kJ of heat is released
B.
6.02 × 10^2 kJ of heat is absorbed
C.
6.02 × 10^2 kJ of heat is released
D.✓ Correct
3.01 × 10^2 kJ of heat is absorbed
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