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Hydrogen and oxygen combine in the ratio...

Hydrogen and oxygen combine in the ratio of `1:8` by mass to form water. What mass of oxygen gas would be required to react completely with `3` g of hydrogen gas?

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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. The mass of one atom of an element X is 2.0 xx 10^(-23) g. (i) Calc...

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  2. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic ac...

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  3. Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water....

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  4. Which postulate of Dalton’s atomic theory is the result of the law of ...

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  5. Which postulate of Dalton’s atomic theory can explain the law of defin...

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  6. Define the atomic mass unit.

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  7. Why is it not possible to see an atom with naked eyes?

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  8. Write down the formulae of (i) sodium oxide (ii) aluminium chlor...

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  9. Write down the names of compounds represented by the following formula...

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  10. What is meant by the term chemical formula?

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  11. How many atoms are present in a (i) H(2)S molecule and (ii) PO...

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  12. Calculate the molecular masses of H(2), O(2), Cl(2), CO(2), CH(4), C(2...

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  13. Calculate the formula unit masses of ZnO, Na(2)O, K(2)CO(3), given ato...

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  14. If one mole of carbon atoms weighs 12 grams, what is the mass (in gram...

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  15. Which has more number of atoms, 100 grams of sodium or 100 grams of ir...

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  16. A 0.24 g sample of compound of oxygen and boron was found by analysis ...

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  17. When 3.0 g of carbon is burnt in 8.0 g oxygen, 11.0 g of carbon dioxid...

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  18. What are polyatomic ions? Give examples.

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  19. Write the chemical formulae of the following. (a) Magnesium chlorid...

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  20. Give the names of the elements present in the following compounds. ...

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