IndDent || Bharat Maata Ki Jai || 10+ Year Member 5+ Year Member 15+ Year Member Nov 16, 2005 #1 Advertisement - Members don't see this ad which one of these is not naturally occurring: O2, Cl2, SiO2 N2 My answer is Cl2...SiO2 is sand, and that seems to be naturally occurring.
Advertisement - Members don't see this ad which one of these is not naturally occurring: O2, Cl2, SiO2 N2 My answer is Cl2...SiO2 is sand, and that seems to be naturally occurring.
SMC2UCLA2_ Senior Member 10+ Year Member 5+ Year Member 15+ Year Member Nov 16, 2005 #2 IndDent said: which one of these is not naturally occurring: O2, Cl2, SiO2 N2 My answer is Cl2...SiO2 is sand, and that seems to be naturally occurring. Click to expand... O2 - DUH Upvote 0 Downvote
IndDent said: which one of these is not naturally occurring: O2, Cl2, SiO2 N2 My answer is Cl2...SiO2 is sand, and that seems to be naturally occurring. Click to expand... O2 - DUH
IndDent || Bharat Maata Ki Jai || 10+ Year Member 5+ Year Member 15+ Year Member Nov 16, 2005 #3 it says...NOT naturally occurring...how is that O2? Upvote 0 Downvote
