when the voltage-gated ion channels open, both sodium and potassium ions cross the membrane but in opposite directions. what is the ultimate cause of this occurance?

12 is probably the typical age for a first kiss but i think its to young.

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

The answer for this is a

Answer(28.02g/mol);