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प्रश्न
Work out the formulae for the following compounds:
Calcium carbonate
उत्तर
Valency of Calcium = 2
Valency of Carbonate ion = −2
Formula for calcium carbonate can be worked out by crossing the valencies of the constituent elements/ions. +2 positive charge of calcium neutralizes the −2 negative charge of carbonate ion.
Therefore, formula for calcium carbonate is: CaCO3.
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संबंधित प्रश्न
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Two samples ‘m’ and ‘n’ of slaked lime were obtained from two different reactions. The details about their composition are as follows:
- ‘sample m’ mass: 7g
- Mass of constituent oxygen: 2g
- Mass of constituent calcium: 5g
- ‘sample n’ mass: 1.4g
- Mass of constituent oxygen: 0.4g
- Mass of constituent calcium: 1.0g
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