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प्रश्न
State the law of constant proportions.
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उत्तर
The Law of constant proportions states that in a pure chemical compound the elements are always present in definite proportions by mass.
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संबंधित प्रश्न
Name the scientist who gave law of constant proportions.
Name any two laws of chemical combination.
Which postulate of Dalton’s atomic theory can explain the law of constant proportions ?
The atomic theory of matter was proposed by :
The law of constant proportions was given by :
In an experiment, 4.90 g of copper oxide was obtained from 3.92 g of copper. In another experiment, 4.55 g of copper oxide gave, on reduction, 3.64 g of copper. Show with the help of calculations that these figures verify the law of constant proportions.
When 5 g of calcium is burnt in 2 g of oxygen, then 7 g of calcium oxide is produced. What mass of calcium oxide will be produced when 5 g of calcium is burnt in 20 g of oxygen ? Which law of chemical combination will govern your answer ?
What do we call those particles which have more or less electrons than the normal atoms ?
Work out the formulae for the following compounds:
Calcium carbonate
In water, hydrogen and oxygen are combined in the ratio of _____ by mass.
