Joanne C. answered 05/23/23
Electrical Engineer / Homeschool Teacher & Tutor 19+ Years
Fe2O3 + 3 H2 -> 2 Fe + 3 H20
How many grams of iron can be made from 0.103 moles of Fe2O3
To figure out how many grams of iron (Fe) can be made from 0.103 moles of Fe2O3 you would do the following.
Start with the given information
You are given 0.103 moles of Fe2O3
The equation gives you the relationship between the number of moles of Fe2O3 and the number of moles of Fe. In this case, there is 1 mole of Fe2O3 to 2 moles of Fe Fe2O3 + 3 H2 -> 2 Fe + 3 H20
The periodic table of elements will provide the number of grams in a mole of an element. For Fe, it's 55.845g per mole.
Multiply the values and conversions. Make sure to use the relationship such that your units cancel out and you are left with grams of Fe
0.103 moles Fe2O3 X 2 mole Fe X 55.845 g Fe = 11.5 g of Fe
1 mole Fe2O3 1 mole Fe
Let me know if you need more clarification :)