I need help

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I need help
Topic Started: May 30 2009, 08:31 PM (87 Views)
*Brian*	May 30 2009, 08:31 PM Post #1
Homosexual Ogre Posts: 938 Group: Troll Member #4,185 Joined: May 9, 2009 What Browser do you use? Firefox	I'm trying to study for an acceptance exam, and I've come across a couple of science problems that stump the hell out of me. Well here goes. Balance These Equations: (a) NaClO = NaCl + O ----------3--------------2 (b) MnCl + Al = Mn + AlCl ----------2------------------3 (c) C H + O = H O + CO -----4-10--2-----2-------2 In case that was too confusing, I'll try again. (a) NaClO (divided by 3) = NaCl + O (divided by 2) (b) MnCl (Divided by 2) + Al = Mn + AlCl (divided by 3) (c) C (divided by 4) multiplied by H (divided by 10) + O (divided by 2) = H (divided by 2) multiplied by O + CO (divided by 2) Alright, I'm already confused just trying to explain this, and I doubt I even explained it right. Help me? Edited by Brian, May 30 2009, 08:40 PM.
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*Rebel X*	May 31 2009, 01:03 AM Post #2
Posts: 5,561 Group: Shadow Rep Member #88 Joined: January 16, 2005	Alright, from what I understand your trying to balance the atoms of the Chemical For the First One, "(a) NaClO = NaCl + O ----------3--------------2" means 1 atom of NaCl, 3 atoms of Oxygen equals 1 atom of NaCl and 1 atom of Oxygen. Which should look like : NaClO3 = NaCl + O2 in order to balance the atoms on both sides of the equation first you balance the Oxygens, so on the both sides you multiply by 2. This gives you NaCl2O6 = 2NaCL+ O2. The leaves you NaCl balanced and you Oxygen unbalanced, so then you multiply by 3 to balance the Oxygen. Your answer being, 2NaClO3 = 2NaCl + 3O2 The Second, (b) MnCl + Al = Mn + AlCl ----------2------------------3" Looks like: MnCl2 + Al = Mn + AlCl3 You answer being, 3MnCl2 + 2Al = 3Mn + 2AlCl3 As for the last one, it's a bit complicated. I don't think I can do it, but I can try and give you an indefinite answer later
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Trickster	May 31 2009, 01:23 AM Post #3
Ninja Posts: 327 Group: Member Member #4,130 Joined: April 17, 2009 Favourite Anime Dragonball Z, Naruto What Browser do you use? Firefox	Wow, i remember doing these in school, and they were somewhat easy, but it has been many years, i remember a little bit, but not a lot.
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Kotetsu	May 31 2009, 01:46 AM Post #4
SOUPER SAYIN THREE Posts: 6,114 Group: Admin Adviser Member #48 Joined: December 17, 2004 Favourite Anime Naruto What Browser do you use? Firefox, anything else is for failures. Favourite Manga Naruto Shippuuden, Straight from Japan.	(c) C H + O = H O + CO -----4-10--2-----2-------2 -------------------------------- 2C(4)H(10) + 13O(2) = 10H(2)O + 8CO(2) The easiest way to solve this problem is by starting at a multiple of 1 at the CH compound. Work your way up to about 4. You'll notice that both 2 and 4 work when you multiply everything out by balancing it. 4 is not correct because it can be reduced. When doing these problems, starting at the compound with the largest amount of molecules is the best method.
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*Brian*	May 31 2009, 01:54 AM Post #5
Homosexual Ogre Posts: 938 Group: Troll Member #4,185 Joined: May 9, 2009 What Browser do you use? Firefox	Alright, these seem pretty accurate from what I can see. I could barely remember them either, Josh. Thanks a lot Dan, Kotetsu.
	"They wanna take your women." - Too inappropriate for DBZF


Kotetsu	May 31 2009, 02:12 AM Post #6
SOUPER SAYIN THREE Posts: 6,114 Group: Admin Adviser Member #48 Joined: December 17, 2004 Favourite Anime Naruto What Browser do you use? Firefox, anything else is for failures. Favourite Manga Naruto Shippuuden, Straight from Japan.	No problem. I'm terrible at chemistry unless it's the math portions. PV=nRT / Ideal Gas laws are my favorite questions.
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