In the following reaction between copper metal and silver nitrate, it produces 38.1 g Ag with a precent yield of 88%. What was the theoretical yield?
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag

The correct name for n3-ion should be azide.

Silicon  6.0x10^23 is avogadro's number so the answer has to be 1 mole of whatever it is. since the molarity of silicon is equal to 28g/mol, this has to be the answer because 28g of si is 1 mole of si.