Is a fuel cell a primary or secondary cell

Explanation:

Chapter 1 of the book is about primary and secondary batteries which include fuel cells and metal-air cells. Fuel cells and metal-air cells convert the energy of electrochemical reactions directly into low voltage, direct current electricity.

Enrol in our 50 studyscore masterclass. Click here! Fuel cells are a type of primary cell in that they are not recharged, However, they are unique because they never run out, if the reactants are constantly supplied.

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

this could be newton#'s law of cooling. the cooling curve is exponential