L luv8724 Full Member 10+ Year Member Joined Apr 1, 2010 Messages 154 Reaction score 0 Points 0 Pre-Dental Jun 29, 2010 #1 Advertisement - Members don't see this ad how much heat is released when 120g of Ca(s) reacts completely with excess O2(g)? 2Ca(s) + O2(g) --> 2CaO(s) H= -1271KJ Ans = 1907KJ Can someone explain this to me
Advertisement - Members don't see this ad how much heat is released when 120g of Ca(s) reacts completely with excess O2(g)? 2Ca(s) + O2(g) --> 2CaO(s) H= -1271KJ Ans = 1907KJ Can someone explain this to me
H herkulease Full Member 10+ Year Member Joined Jan 23, 2009 Messages 898 Reaction score 2 Points 4,551 Pre-Dental Jun 29, 2010 #2 this is essentially a stoichiometry problem. covert 120g of Ca to mols. then 3 Mols of Ca (-1271KJ/2 Mols of Ca) Mols of Ca cancel out. multiple and then divide and your left with -1906.5KJ or -1907KJ Upvote 0 Downvote
this is essentially a stoichiometry problem. covert 120g of Ca to mols. then 3 Mols of Ca (-1271KJ/2 Mols of Ca) Mols of Ca cancel out. multiple and then divide and your left with -1906.5KJ or -1907KJ
I iamgosu Full Member 10+ Year Member Joined Oct 13, 2008 Messages 214 Reaction score 0 Points 0 Dental Student Jun 29, 2010 #3 hercules is the man! Upvote 0 Downvote
