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Calculate the number of atoms in each of the following (i) 52 moles of Ar (ii) 52 u of He (iii) 52 g of He.

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MODERN PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY -NCERT FILE SOLVED (NCERT TEXTBOOK EXERCISES)
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  3. Express the following in the scientific notation: a. 0.0048 b. 234...

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  4. How many significant figures are present in the following? a. 0.0025...

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  5. Round up the following upto three significant figures: a. 34.216 b...

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  6. The following data are obtained when dinitrogen and dioxygen react to ...

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  7. If the speed of light is 3.0xx10^(8) m s^(-1), calculate the distance ...

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  8. In a reaction A+B(2) rarr AB(2) Identify the limiting reagent, if ...

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  9. Dinitrogen and dihydrogen react with each other to produce ammonia acc...

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  10. How are 0.50 m Na(2)CO(3) and 0.50 M Na(2)CO(3) different?

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  11. If ten volumes of dihydrogen gas reacts with five volumes of dioxygen ...

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  12. Convert the following into basic units : (i) 28.7 pm (ii) 15.15 mus...

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  13. Which one of the following will have the largest number of atoms? (i...

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  14. Calculate the molarity of a solution of ethanol in water in which the ...

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  15. What will be the mass of one ""^(13)C atoms in g?

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  16. How many significant figures should be present in the answer of the fo...

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  17. Calculate the number of atoms in each of the following (i) 52 moles of...

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  18. A welding fuel gas contains carbon and hydrogen only. Burning a small ...

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