Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
holtadit:
--- Quote ---Q4d! I got the moles for CaSO4 and H20 (0.58 mol and 1.16 mol, respectively) but I'm confused with the x. Do you add the moles for CaSO4 and H20 to get x
--- End quote ---
Do it step by step - dont jump.
First find the no. of moles of CaSO4
79.1/136 = 0.582 moles
20.9/18 = 1.16 moles
Notice we are in effect finding the empirical formula hence:
0.582/0.582 = 1 and 1.16/0.582 = 2
Thus X = 2
SEL123:
Can this page ALSO help me with Bio??
If it can
Can someone please help me:
My school gave us waaaaaaaaaaay too much information..
And I just want to be sure:
When making cheese,bread, wine,yoghurt, and beer, what do we have to know EXACTLY
Our school gave us steps and all those stuff
Should we ONLY know what the study guide tells us on this part (the results, and a brief explanation)???
$H00t!N& $t@r:
--- Quote from: Ari Ben Canaan on May 10, 2010, 04:16:20 am ---Do it step by step - dont jump.
First find the no. of moles of CaSO4
79.1/136 = 0.582 moles
20.9/18 = 1.16 moles
Notice we are in effect finding the empirical formula hence:
0.582/0.582 = 1 and 1.16/0.582 = 2
Thus X = 2
--- End quote ---
Oh, I get it now thanks Ari! :)
holtadit:
--- Quote from: SEL123 on May 10, 2010, 05:44:07 am ---Can this page ALSO help me with Bio??
If it can
Can someone please help me:
My school gave us waaaaaaaaaaay too much information..
And I just want to be sure:
When making cheese,bread, wine,yoghurt, and beer, what do we have to know EXACTLY
Our school gave us steps and all those stuff
Should we ONLY know what the study guide tells us on this part (the results, and a brief explanation)???
--- End quote ---
I'll ask nid to help you.
--- Quote from: Shooting Star on May 10, 2010, 06:23:22 am ---Oh, I get it now thanks Ari! :)
--- End quote ---
No problemo ;)
The Golden Girl =D:
--- Quote from: Baladya on May 09, 2010, 08:04:22 pm ---OMG I freakin h8 this and the Cations/Anions Test man >:( Can't manage to memorize them :( :P
--- End quote ---
chill ..... u must understand it first so that when u memorize it'll be easy for u to memorize ,k ?
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