To completely dissolve a sample of silver bromide, the amount of sodium thiosulfate added to a solution must be: a. equimolar with AgBr
b. greater than the number of moles of AgBr
c. less than the number of moles of AgBr
d. impossible to predict

The characteristics 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 an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.