Pls help now quickly . Iron (II) sulfide reacts with oxygen to produce iron (III) oxide and sulfur dioxide. 4 FeS2 (s) + 11 O2(g) →→2 Fe2O3 (s) + 8 SO2 (8)
How many moles of FeS2 are needed to produce 10 moles of Fe2O3?
A. 4
U
B. 5
O
C. 10
D. 20

One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit