What type of reaction is it

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

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.

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure