Steps for balancing an equation:
Lets take
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Put boxes around the formulae.
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Create a table depicting the no. of atoms of each element in LHS and RHS. For example:
Element LHS RHS Fe 1 3 H 2 2 O 1 4 -
Choose the compound with max number of atoms in it, and choose the element which has the max number of atoms in LHS and RHS. For example here,
and Oxygen. -
Multiply the smaller value of either side with a whole number to make it the same like the bigger value, like making a common denominator. For example,
Atoms of Oxygen LHS RHS Initial 1 in 4 in Balance 1 x 4 4 -
Repeat the steps until the balance is complete and all the elements have same no. of atoms in each side. For example, the above equation will turn into,
Original note: Balanced Chemical Equations