I really dont understand any of these .. please HELP!!!!!!!! LOL !!! These are the only ones i dont get out of 32 .. so it is pretty good to get the others .. thanks .. give sites to if you can and details!
7. * give an example of a chemical equation
11. * using the principle of the " conservation of mass " , how does a balanced equation satisfy this law?
13. in question 7 above , identify the coefficient . (rewrite the equation)
14. Balance thw two practice problems found at the top of p. 549. Also be sure to write the word equation for each of the problems.
(remember word equations do not include numbers)
***** PRACTICE PROBLEMS *****
1. Balance the equation: C + CL2 ---> CCL4
2. Balance the equations AL2O3 ---> AL + 02
19. * name and balance the types of reactants and describe what happens to the atoms or molecule s that gives each reactant its name.
A.) H2 + CL2 ---> (BLANK) HCI
B.) (BLANK) Zn + (BLANK) HCl ---> (BLANK) ZnCl3 + (BLANK)H2
C.)(BLANK)H2o--->
2006-10-18 14:36:29 · 7 answers · asked by ♥♥ 2 in Education & Reference ➔ Homework Help
sorry dude i left that book in my locker
2006-10-18 14:39:11 · answer #1 · answered by Anonymous · 1⤊ 2⤋
YOU ARE ON CRACK THESE ARE NOT 8TH GRADE PROBLEMS
also they make no sense. What's on the top of page 549?!?
You have tons of chemical equations on this page, just use one of those to solve question 7.
You need to understand how to make equations. That "conservation of mass" thing. Every atom on the left has to be on the right as well. So if on the left side you have two oxygen molecules (each oxygen molecule is called 02, and two of them would be called 2 02) then you better have four of them on the right hand side. So if you're making H20, you better make four of them, 4(h20) or something like that.
2006-10-18 14:51:06 · answer #2 · answered by Chris P 3 · 0⤊ 0⤋
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2016-12-04 23:46:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Man!!! It really stinks to wait to the last minute doesn't it? And now you are wasting even more time read our responses hoping we do your homework for you. Ohh to be in 8th grade for the second time.
2006-10-18 14:45:51 · answer #4 · answered by Anonymous · 1⤊ 0⤋
7. is combining 2 units of sodium (Na) with one molecule of chlorine gas (CI2) to form 2 units of table salt.
2Na = CI2 ....>2NaCI
13. go to http://www.exolorelearning.com
14. go to http://search.yahoo.com/search equation=C%3DcCL2
2006-10-18 15:06:33 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I really wish could help. That pre-allgebra? I hated that so much! Good Luck man! I wish it to you! :-)
2006-10-18 14:47:55 · answer #6 · answered by Artsy 1 3 · 1⤊ 0⤋
I couldn't find p. 549...
2006-10-18 14:44:03 · answer #7 · answered by Silly Me 3 · 1⤊ 1⤋