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What name is the mass of 0.2 mole of ox...

What name is the mass of `0.2` mole of oxygen atoms ?

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The correct Answer is:
3.2 g
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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. Convert 12 g of oxygen gas into moles.

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  2. How many moles are 3.6 g of water ?

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  3. What name is the mass of 0.2 mole of oxygen atoms ?

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  4. Find the mass of 2 moles of oxygen atoms ?

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  5. Fill in the following blanks : (a) 1 mole contains "…………." atoms, ...

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  6. (a) How many atoms are there in exactly 12g of carbon-12 element ? (...

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  7. Calculate the mass of 12.044 xx 10^(25) molecules of oxygen (O(2)).

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  8. What is the number of molecules in 1.5 moles of ammonia ?

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  9. How many moles of calcium carbonate (CaCO(3)) are present in 10 g o...

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  10. How many moles of O(2) are there in 1.20 xx 10^(22) oxygen molecu...

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  11. If one mole of nitrogen molecules weighs 28 g, calculate the mass of o...

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  12. How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 2...

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  13. What is the number of zinc atoms in a piece of zinc weighing 10 g ? ...

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  14. Calculate the mass of 3.011 xx 10^(24) atoms of carbon.

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  15. If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the ma...

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  16. How many atoms are there in 0.25 mole of hydrogen ?

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  17. Calculate the number of moles iin 12.044 xx 10^(25) atoms of phosphoru...

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  18. Calculate the number of molecules present in a drop of chloroform (...

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  19. What is the mass of 5 moles of sodium carbonate (Na(2)CO(3)) ? (Atom...

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  20. Calculate the number of molecules in 4 g of oxygen .

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