An oxygen tank kept at 20 ◦C contains 28 moles of oxygen and the gauge reads 31 atm. After two weeks, the gauge reads 10.5 atm. How much oxygen was used during the twoweek period? 1. 9.48 mol 2. 9.25 mol 3. 20.5 mol 4. 18.52 mol 5. 7.51 mol

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 !

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.

What do you not know about it