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Chemistry 7 Online
OpenStudy (anonymous):

IN WICH OF THE FOLLOWING REACTIONS IS AN ACTIVATION ENERGY NEEDED TO ENABLE THE REACTION TO PROCCED? 1.-FREEZING WATER, 2.DISSOLVING SALT IN WATER, 3.-PAINT DRYING, 4.-STARTING A CAMPFIRE OR 5.-A TWO-PART EPOXY HARDENING?

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