26已知反应2NH3= N2+ 3H2,在等温条件下,标准平衡常数为025,那么,在此条件下,氨的合成反应1/2 N2+ 3/2 H2= NH3的标准平衡常数为
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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