Apply the principles of electrochemistry to study a real – time voltaic cell. (i) describe the redox reactions happening during the charging/ discharging process of the cell. (ii) calculate the cell potential (output of the cell). note: you are encouraged to use a voltaic cell, used in our daily life, as a system to be considered.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

List the path of the respiratory system

All forces cause motion? true or false