Which does not describe the mole? A. a unit used to count particles directly
B. it is equal to the 24.2L of a gas at STP
C. the SI unit for the amount of a substance
D. Avogadro’s number of molecules of a compound

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Ithink its called the coefficent.