Am initial sample of iridium 192 is prepared pure, with no contamination of other isotopes. After a certain amount of time, one finds that the sample includes 4.4z osmium 192. How much time has passed since the initial sample was prepared ?

Chewy,wrapped,not in all white,the wrapper is clear

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 !

The answer is a) carbon-12