Answer:
Sodium Hydroxide: NaOH
Copper(II) Nitrate: Cu(NO3)2
Explanation:
Sodium Hydroxide (NaOH):
Sodium (Na) has a valency of +1.
Hydroxide (OH) has a valency of -1.
To balance the charges, one sodium ion (Na+) combines with one hydroxide ion (OH-).
Therefore, the empirical formula of sodium hydroxide is NaOH.
Copper(II) Nitrate (Cu(NO3)2):
Copper (Cu) has a valency of +2.
Nitrate (NO3-) has a valency of -1.
To balance the charges, one copper ion (Cu2+) combines with two nitrate ions (NO3-).
To find the empirical formula of a compound, we need to determine the simplest whole number ratio of atoms present in the compound.
