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CHEM AND BIO HELP AND TIPS HERE

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8T:

--- Quote from: Nidzzz on June 06, 2010, 07:47:31 pm ---iron is reduced

--- End quote ---
Kay :)
Thank You

NidZ- Hero:

--- Quote from: ~VIN1094~ on June 06, 2010, 07:34:50 pm ---Um, in my book for cracking its 540*C :-\ and yeah typo Al2O3 ;)

--- End quote ---
450C-750C

8T:
In o/n 09 paper 32 q 6 c the total number of moles of gases why is it 0.08 i thought it would be 0.04 explain please quickly???

8T:
Here's the link 4 my question ...http://www.freeexampapers.us/IGCSE/Chemistry/CIE/2009%20Nov/0620_w09_qp_32.pdf

WARRIOR:

--- Quote from: 8T on June 06, 2010, 07:56:22 pm ---In o/n 09 paper 32 q 6 c the total number of moles of gases why is it 0.08 i thought it would be 0.04 explain please quickly???

--- End quote ---
first you find the moles of fe2o3 which is  .08


and thn the ration of moles of gases = 2: 1 therfore .04

and there are two gases

so . 04 + .04

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