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DINESH PUBLICATION-ATOMS AND MOLECULES-NCERT IN TEXT PROBLEMS
- In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic ac...
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- Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water....
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- Which postulate of Dalton’s atomic theory is the result of the law of ...
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- Which postulate of Dalton’s atomic theory can explain the law of defin...
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- Define the atomic mass unit.
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- Why is it not possible to see an atom with naked eyes?
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- Write down the formulae of (i) sodium oxide (ii) aluminium chlor...
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- Write down the names of compounds represented by the following formul...
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- What is meant by the term chemical formula?
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- How many atoms are present in a (i) H(2)S molecule and (ii) PO...
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- Calculate the molecular masses of H(2), O(2), Cl(2), CO(2), CH(4), C(2...
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- Calculate the formula unit masses of ZnO, Na(2)O, K(2)CO(3), given ato...
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- Calculate the number of moles for the following: (i) 52 g of He (fi...
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- Calculate the number of particles in each of the following: (i) 4...
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- If one mole of carbon atoms weighs 12 grams, what is the mass (in gram...
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- Which has more number of atoms, 100 grams of sodium or 100 grams of ir...
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