Question

Iron is found in Earths crust as several different iron compounds. Calculate the mass (in kg) of each compound that contains 1.0 x 10E3 kg of iron.
Fe2O3
Please help step by step

Answer 1

I assume your 1.0 x 10E3 kg is your way of writing 1.0E3 kg.
There is a shortcut you can use that is not taught in classrooms anymore (at least I don't think so) called using a chemical factor. Here is how you do it the simple way.
1E3kg x (molar mass Fe2O3/2*atomic masss Fe) = ??kg Fe2O3.
The part in parentheses is the chemical factor.

Answer 2

So this is what I did
1E6kg x 1 mole Fe/55.85g= 17905 moles Fe
17905 mole Fe x 1 mol Fe2o3/2mol Fe *159.70g/1moleFe2O3* 1kg/1000= 1429kg

Answer 3

Monique I have a question although this problem is from like 5 years ago. Where did you get the 6 from th 1E6kg? Should it be 1E3 Kg?

Answer 4

Philip, 1000 grams are equal to 1 kg. I think Monique converted 1.0 *10^3 kg of Iron (Fe) to 1.0*10^6 g Fe by doing the following:
1.0 *10^3kgFe * 1000gFe/1 kgFe= 1.0 * 10^6gFe
I’m sorry this is pretty late..:3

Answer 5

i need help with dis, very confusing. to da people in za future, hello, hopefully your seeing this at a time better than 2022 lol

Answer 6

hey friends

Answer 7

Could make this a little clearer!