Actually when you look that up.... UH that is hair loss or he could be considered MR. CLEAN
Answer:
Cu(s) + 2AgNO3(aq)→Cu(NO3)2(aq)+2Ag(s)
This chemical equation means:
One mole of solid copper plus two moles of aqueous silver nitrate produce one mole of copper(II) nitrate plus two moles of solid silver.
This is a single replacement reaction in which the metal copper replaces the metal silver.
A is correct. water is incompressible, so it will always have the same density, regardless of volume