Advertisements
Advertisements
प्रश्न
What is a chemical formula? What is the significance of a formula?give an example to illustrate?
Advertisements
उत्तर
The chemical formula is used to describe the types of atoms and its number in an element or compound.
Significance- Chemical formula is very important when trying to find information about chemical compounds because they tell us about the elements present and the number of atoms in that compound.
Example - Salt - NaCl, ethanol C2H6O because the molecule of ethanol contains two Carbon, 6 Hydrogen and 1 Oxygen atom.
APPEARS IN
संबंधित प्रश्न
Write down the formulae of sodium sulphide.
What is meant by the term chemical formula?
Write the chemical formula of the Calcium carbonate.
Fill the following blanks with suitable words :
In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................
Explain the difference between 2N and N2.
An element X has a valency of 4 whereas another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?
Give the empirical formula of : Benzene C6H6
Identify the following substance:
A brown gas D with the irritating smell.
Write the formula of the following compound:
Sodium bisulphate
Write the formula of the following compound:
Magnesium hydroxide
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Aluminium sulphate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Copper [II] sulphide
Write the formula of the following compound:
Iron [II] oxide
Write the chemical formula for the following compounds
- Aluminium sulphate
- Silver nitrate
- Magnesium oxide
- Barium chloride
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
There are ______ hydrogen atoms in water molecule.
