Nitrogen and hydrogen react to form ammonia. The unbalanced chemical equation is written as: N2 + H2 NH3. To balance the equation, the number of atoms of each element on both sides must be equal. This is done by determining the coefficients using the law of conservation of mass. The steps to balance equations are to write the unbalanced equation, identify the elements present, count the atoms of each element, and apply coefficients to make the atom counts equal on both sides.
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Balancing Chemical Equation
2. + 巨
What number represents the
coefficient?
What number represents the subscript?
What element is represented by the
letter H?
How many atoms of H do you have?
2
3
Hydrogen
6
4. Steps in Balancing
Equations
1. Write the unbalanced chemical equation, make sure you
have followed correctly the rules in writing formulas of
compounds.
2. Take note of the elements present in the reactant and
product side.
3. Count the number of atom/s of each element present in
the reactant and product side.
4. Apply the Law of Conservation of Mass to get the same
number of atoms of every element on each side of the
equation.