Final answer:
To write the molecular formula for a compound, you need to determine the elements present and the number of atoms of each element. Here are the molecular formulas for the given compounds: calcium bicarbonate - Ca(HCO3)2, sodium peroxide - Na2O2, water - H2O, silver nitrate - AgNO3, potassium carbonate - K2CO3, sodium carbonate - Na2CO3, zinc chloride - ZnCl2, calcium hydroxide - Ca(OH)2, magnesium chloride - MgCl2.
Step-by-step explanation:
To write the molecular formula for a compound, you need to determine the elements present and the number of atoms of each element. The molecular formula represents the actual number of atoms of each element in a molecule. Here are the molecular formulas for the given compounds:
Calcium bicarbonate: Ca(HCO3)2
Sodium peroxide: Na2O2
Water: H2O
Silver nitrate: AgNO3
Potassium carbonate: K2CO3
Sodium carbonate: Na2CO3
Zinc chloride: ZnCl2
Calcium hydroxide: Ca(OH)2
Magnesium chloride: MgCl2