(c) Balance the half-equation for the reaction which occurs at an electrode in one
kind of hydrogen fuel cell.
[1 mark
H2
+
OH
->
H2O
+
e-

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma