Write the molecular formulae for the following compounds and name the elements present.
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Answer: (a) Baking soda — NaHCO3 Elements present in Baking soda are sodium, hydrogen, oxygen, and carbon. (b) Common salt — NaCl Element present are: Sodium and chlorine. (c) Sulphuric acid — H2SO4 Element present are: Hydrogen, sulphur and oxygen. (d) Nitric acid — HNO3 Elements present are: Hydrogen, nitrogen and oxygen.