I have a online class that I have been stuck on one assignment for over a month. It's only 3 questions (I u get it right it skips to next) its a mol to mol assignment will pay fg for help. Thank you.

just post it

How many moles if feO are produced if 8 moles of CuFeS2 are consumed
2CuFeS2(last 2 is little)+5O2 --> 2Cu + 2FeO + 4SO2 (after 4SO 2 is little)

assuming you have unlimited access to oxygen... 2 moles of CuFeS2, produce 2 moles of 2FeO.....so 8 moles of CuFeS2, produce 8 moles of 2FeO

heh fixed

That was right .
Hold on gotta copy another..
Pb(no3)2 required if 12 moles of Al(no3) are produced
3pb(no3)2 + 2alcl3 --> 3pbcl2 + 2al(no3)3

A)18 moles 8 moles
C) 12 moles D) 10 moles

This post was edited by daiblorules on Jan 9 2014 05:01pm

well 3 moles of pb(no3)2 make 2 moles of al(no3)3

3/2 = x/12

x = 18 moles

Final one
How many moles of co2 are produce if 6moles of
02 are used
C6h12o6 +6o2 -> 6co2 + 6h2o

you use molar ratios:

6 mol co2 are made for 6 mol o2 used - molar ratio is 6 mol co2/6 mol o2

6 mol o2 * molar ratio =
6 mol o2* 6 mol co2/6 mol o2 = 6 mol co2.