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In a class, a teacher asked students to ...

In a class, a teacher asked students to write the molecular formula of oxygen. Shamita wrote the formula as `O_2`, and Priyanka as O. Which one is correct? State the reason.

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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
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  9. Calculate the mass of the following 0.5 mole of N2 gas

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  10. Calculate the mass of the following 0.5 mole of N atoms

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  11. Calculate the mass of the following 3.011 times 10^23 number of N at...

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  12. Calculate the mass of the following 6.022 times 10^23 number of N2 m...

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  13. Convert in to moles: 12 g of O2 gas

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  14. Convert in to moles: 20 g of water

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  18. Which has more number of atoms 100 g of sodium or 100 g of iron? Justi...

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  19. Write an equation for decomposition reaction where energy is supplied ...

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  20. Give an example for decomposition reaction.

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