Question

PLEASE HELP QUICKLY BUT CORRECT!!

You are asked to make 112 g of iron from iron oxide and excess carbon monoxide. Fe2O3 (s) + 3CO (g) → 2Fe (l) + 3CO2 (g) Approximately how many grams of iron oxide must you use? Question 5 options:
A. 720 g
B. 240 g
C. 107 g
D. 160 g

Answer 1

Im taking the test. The answer is 160 g.

-Steel jelly

Answer 2

calculate the number of moles of moles of iron prepared
mole= mass/RFM
RFM of iron is =56 g/ mol
moles of iron prepared is therefore 112g /56g/mol=2moles
by use of reacting ratio between Fe2O3 to Fe that is 1:2 therefore moles of Fe2O3 used is (1x2)/2+1 mole
mass of Fe2O3=RFM x number of moles
RFM of Fe2O3=160g/mol
mass= 1 mole x 160 g/.mol=160g (D)