3 在298K,101325kPa时,一氧化二氮分解反应的活化能为240 kJ·mol-1 △rHm = - 164 kJ·mol-1,则其逆反应的活化能为( ) kJ·mol-1
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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