An alarm clock draws 0.5 a of a current when connected to a 120 volt circuit. calculate its resistance

Resistance = (voltage) / (current)

Resistance = (120 V) / (0.5A) = 240 ohms

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.