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How to Balance:

Word equation: Iron + Sulfuric acid → Iron (II) sulfate + hydrogen gas

Type of Chemical Reaction: For this reaction we have a single displacement reaction.

Balancing Strategies: Note that this is the chemical reaction that takes place when diluted Sulfuric acid reacts with iron. If you have concentrated Sulfuric acid you will have a different equation.

For a complete explanation, watch:

When balancing chemical equations our goal is to have the same number of each type of atom on both sides of the equation.

Only change the coefficients (these are the numbers in front substances).
Never change the subscripts (the small numbers after elements).