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What is mass number of an atom?...

What is mass number of an atom?

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NCERT TAMIL-CHEMICAL CALCULATION -Problems of Practice
  1. Calculate the formula weight of compounds K2CO3

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  2. What is the mass in grams of a calcium atom, Ca?

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  3. What is mass number of an atom?

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  4. Calcualte the mass (in grams) of each of the following species. a. ...

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  5. H2O2 is a colourless liquid. A concentrated solution of it is used as ...

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  6. Boric acid, H3BO3 is a mild antiseptic and is often used as an eye was...

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  7. CS2 is a colourless, highly inflammable liquid used in the manufacture...

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  8. Nitric acid, HNO3 is a colourless, corrosive liquid used in the manufa...

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  9. Obtain the moles of substances in the following. a. 3.43 g of C b...

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  10. How many molecules are there in 56 mg HCN ?

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  11. Calculate the following Number of molecules in 43 g NH3

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  12. Calculate the following Number of atoms in 7.46 g Li

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  13. Calculate the following Number of atoms in 7.46 g Li

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  14. A substance on analysis, gave the following percentage composition, Na...

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  15. What is the simplest formula of the compound which has the following p...

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  16. A compound on analysis gave the following percentage composition C = 5...

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  17. An organic compound was found to have contained carbon = 40.65%, hydro...

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  18. A compound contains 32% carbon, 4% hydrogen and rest oxygen. Its vapou...

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  19. An acid of molecular mass 104 contains 34.6% carbon, 3.85% hydrogen an...

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  20. What is the simplest formula of the compound which has the following p...

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