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प्रश्न
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 ....................
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उत्तर
In a chemical reaction, the sum of masses of the reactants and their products remain unchanged. This is called the law of conservation of mass.
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संबंधित प्रश्न
Write down the formulae for the following compounds :
Calcium oxide
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed ?
Give the formula and valency of:
chromate ………….…….. .
Correct the following statement:
Molecular formula of water is H2O2
Write the formula of the following compound:
Potassium hydroxide
Write the formula of the following compound:
Sodium bisulphite
Write the formula of the following compound:
Calcium sulphate
Write the formula of the following compound:
Zinc carbonate
What is a chemical formula?
