Substance abuse is A mass consisting of modular leg 64 S and O ayang each equally by mass if the substance has A particle were 16 grams equals B B substances substances 19 grams, what should be the substance.
A special mass collection of 64 groups consisting of S and O tire equal mass if the substance A 16 g amount of radioactive substances B 19 g B should be the substance.
Substance A molecular mass group and 64 consists of S O like it evenly by mass, if the substance A 16 grams with a number of particles only with substance B 19 g B substances. Should a substance.