Tip:

List the elements down the center below the arrow sign.

Write the number of atoms present on each side of the element that corresponds to the same side in the reaction.

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Example:

Count the number of atoms for each element present on both sides of the yield sign (arrow).

MgCl2 + NaOH ---> Mg(OH)2 + NaCl

1 Mg 1

2 Cl 1

1 Na 1

1 O 2

1 H 2

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