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ATOMS AND MOLECULES
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DINESH PUBLICATION-ATOMS AND MOLECULES-VERY SHORT
- Point out the limitations of the law of constant composition if any.
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- (a) State the various postulates of Dalton's atomic theory of matter...
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- Most of the postulates of Dalton's Atomic theory have been found to be...
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- Give two points of distinction between atom and molecule.
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- Explain why some elements occur in atomic form while others in molecul...
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- How many molecules and atoms of phosphorus are present in 0-1 mole of ...
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- How many atoms of carbon and oxygen are present in 1.5 mole of CO(2)?
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- A mole is quite often called chemist's dozen. Explain.
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- How many moles and atoms of gold are present in 49-25 g of gold? (Atom...
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- Calculate the number of moles in 17g of hydrogen peroxide (H(2)O(2)).
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- Convert into moles (a) 12g of oxygen gas (b) 20g of water.
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- An element B forms an oxide B,O(3). Find its valency and write the for...
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