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Calculate the percentage composition of ...

Calculate the percentage composition of various elements in :
Sodium carbonate, `Na_2CO_3`
Given that the relative atomic masses of O = 16, Na = 23 and C = 12.

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To calculate the percentage composition of various elements in sodium carbonate (Na₂CO₃), we will follow these steps: ### Step 1: Determine the relative molecular mass of Na₂CO₃ 1. **Calculate the total mass of sodium (Na)**: - There are 2 sodium atoms in Na₂CO₃. - Relative atomic mass of Na = 23. - Total mass of Na = 2 × 23 = 46. ...
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ICSE-THE LANGUAGE OF CHEMISTRY-EXCERCISE 1(C ) (Correct the following statement)
  1. Calculate the percentage composition of various elements in : Sodiu...

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  2. Correct the statement : A molecular formula represents an element.

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  3. Molecular formula of water is H2O2.

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  4. A molecule of sulphur is monoatomic.

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  5. CO and Co both represent cobalt.

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  6. Correct the statement : Formula of iron (III) oxide is FeO.

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  7. Calculate the relative molecular mass of : Chloroform [CHCl3] [H=1,C...

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  8. Calculate the relative molecular mass of : Ammonium dichromate [(NH4)2...

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  9. Calculate the relative molecular mass of CuSO4 . 5 H2O [At mass: C =...

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  10. Calculate the relative molecular mass of (NH4)2SO4. [At mass: C = 12...

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  11. Calculate the relative molecular mass of CH4 COONa [At mass: C = 12,...

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  12. Calculate the relative molecular mass of : Potassium Chlorate [KClO3] ...

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  13. Calculate the relative molecular mass of Ammonium chloroplatinate (NH4...

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  14. Give the empirical formula of Benzene (C6H6).

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  15. Give the empirical formula of Glucose (C6H12 O6).

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  16. Give the empirical formula of Acetylene (C2H2).

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  17. Give the empirical formula of Acetic acid (CH3COOH).

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  18. Find the percentage mass of water in Epsom salt MgSO4 . 7 H2O.

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  19. Calculate the percentage of phosphorus in Calcium hydrogen phosphate C...

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  20. Calculate the percentage of phosphorus in Calcium phosphate Ca3 (PO4)2...

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  21. Calculate the percentage composition of each element in Potassium chlo...

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