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P BLOCK ELEMENTS
Question #36922
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Question
What is the change in enthalpy (ΔfH°) for the formation of ammonia from dinitrogen and hydrogen?
A. -46.1 kJmol⁻¹
B. +46.1 kJmol⁻¹
C. 0 kJmol⁻¹
D. -92.2 kJmol⁻¹
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