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प्रश्न
Name any two laws of chemical combination.
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उत्तर
Two laws of chemical combination are:
- Law of conservation of mass
- Law of multiple proportions
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संबंधित प्रश्न
Name the scientist who gave law of constant proportions.
Which postulate of Dalton's atomic theory is the result of law of conservation of mass given by Lavoisier ?
Which part of the Dalton's atomic theory came from the law of constant proportions given by Proust ?
What do we call those particles which have more or less electrons than the normal atoms ?
What do we call those particles which are formed by the gain of electrons by atoms ?
What do we call those particles which are formed by the loss of electrons by atoms ?
Work out the formulae for the following compounds :
Sodium oxide
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
Which law of chemical combination does this prove? Explain.
State the law of constant proportions.
Ruthresh, Hari, Kanishka, and Thahera collected different samples of water from a well, a pond, a river, and underground water. All these samples were sent to a testing laboratory. The test result showed the ratio of hydrogen to oxygen as 1:8.
- What conclusion would you draw from the above experiment?
- Which law of chemical combination does it obey?
