6. What are the bonds called between two hydrogen atoms?

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later.when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

How many cells are our body made of ? ♡

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.