Chemistry Question. (2 Viewers)

[marcquelle]

I don't get how to answer this.

Calculate the mass of iron that will form from 8 x 10^8g of Fe2O3.

this how i start the question

Fe 2x55.85 = 111.7
Oiii3x16.00I= ii48.0
Fe2O3.......i.=159.7
production of Fe=111.7g

then i went 8 x 10^8g of Fe2O3

i. iii 159.7
. . 8 x 10^8 = ?????


then i get stuck can anyone help me please

 

[H4rdc0r3]

(8x10^8 / 159.7) x 111.7 = mass of iron in the chemical formula

 

[jellybelly59]

marcquelle im not sure if it's correct but cant u find the percentage composition of iron in iron oxide and then multiply that by (8 x 10^8) that or use the mass on molar mass formula like H4rdc0r3.

 

[marcquelle]

marcquelle im not sure if it's correct but cant u find the percentage composition of iron in iron oxide and then multiply that by (8 x 10^8) that or use the mass on molar mass formula like H4rdc0r3.

they both work out right in the end thank you guys