Steel Wool & Gas Stoichiometry Author Ms. Skinner Date May 9, 2018 Comments: Leave a comment Finishing up finding the percent oxygen in the air with Dalton’s law of partial pressure and @pascoscientific @NCS_Trojans #chemistryfun #knowwhy #gaslaws #whatamysteriousworldGodmade #awesomestudent #awesomeGod