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Calculate the number of moles in : 52g o...

Calculate the number of moles in : `52g of He

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MBD-ATOMS AND MOLECULES -Example
  1. Work out the formula of :Carbon dioxide

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  2. Work out the formula of : carbon tetrachloride

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  3. Calculate the number of moles in : 52g of He

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  4. Calculate the number of moles in : 12.044 xx10^23

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  5. Give one example in each case , Diatomic molecule

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  6. Give one example in each case , Triatomic molecule

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  7. Give one example in each case , Monoatomic molecule

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  8. An element A has a charge of 3+. Write down the formula of its :Chorid...

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  9. An element A has a charge of 3+. Write down the formula of its : Sulph...

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  10. An element A has a charge of 3+. Write down the formula of its :Nitrat...

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  11. An element A has a charge of 3+. Write down the formula of its : Phosh...

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  12. Write the formula and names of the compounds between : Sodium and sulp...

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  13. Write the formula and names of the compounds between : Aluminium and c...

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  14. Write the formula of the compounds formed by : Cr^(3+) and F^-

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  15. Write the formula of the compounds formed by :Pb^(2+) and SO4^(2-)

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  16. Write the formula of the compounds formed by :Mg^(2+) and S^(2-)

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  17. Write the formula of the compounds formed by: NH4^+and Cr2O7^(2-)

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  18. Write the formula of the compounds formed by : k+ and CrO4^(2-)

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  19. Calculate the formula mass of: Na2 CO3 * 10H2O

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  20. What do you understand by trivial names of compounds ?

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