Write answers to these using mental math (without a calculator). Based on the balanced equation:4 Fe + 3 O2 → 2 Fe2O3 1. To form four units of Fe2O3 , a. How many atoms of Fe are used?____________ b. How many molecules of O2 are needed?____________
Write answers to these using mental math (without a calculator). Based on the balanced equation:4 Fe + 3 O2 → 2 Fe2O3 1. To form four units of Fe2O3 , a. How many atoms of Fe are used?____________ b. How many molecules of O2 are needed?____________
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section17.11: Counting Electrons
Problem 17.16CE
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Question
Write answers to these using mental math (without a calculator). Based on the balanced equation:
4 Fe + 3 O2 → 2 Fe2O3
1. To form four units of Fe2O3 ,
a. How many atoms of Fe are used?____________
b. How many molecules of O2 are needed?____________
Expert Solution
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Step 1
A chemical equation represents the reactants and products participating in a chemical reaction.
Step 2
a.
Consider the balanced reaction.
It is clear that 4 moles of Fe reacts with 3 moles of to form 2 moles of .
Calculate the number of moles of Fe reacts to form 4 moles of .
So, the number of moles of Fe are 8 mol.
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