how many grams of oxygen are needed to react with 350 g of iron to produce 500 g fe 2 o 3?
- Trevor HLv 74 weeks ago
Without doing any calculations :
500g - 350g = 150g
Answer: 150g O2 required.
- pisgahchemistLv 74 weeks ago
Combustion of iron ....
4Fe(s) + 3O2(g) --> 2Fe2O3(s)
350g .......?g ............ 500g
Assuming that you can get exactly 500g of Fe2O3 from 350g of Fe, the just subtract. It's an application of the law of conservation of matter.
But these numbers appear a bit too simple. A quick check is in order.
350g Fe x (1 mol Fe / 55.8g Fe) x (1 mol Fe2O3 / 2 mol Fe) x (159.5g Fe2O3 / 1 mol Fe2O3) = 500.5g ..... imagine my surprise. 500g is close enough for government work.
500g - 350g = 150g O2
- Anonymous4 weeks ago
Sounds like something YOU need to figure out.