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Calculate the molar mass of the followin...

Calculate the molar mass of the following:
`(i) H_(2)O (ii) CO_(2) (iii) CH_(4)`

Text Solution

Verified by Experts

(i) Molecular mass of `H_(2)O = (2 xx 1.008) + (16.00) = 18.016 amu`
(ii) Molecular mass of `CO_(2) = 12.01 + (2 xx 16.00) = 44.01 amu`
Molecular mass of `CH_(4) = 12.01 + (4 xx 1.008)=16.042` amu
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ICSE-SOME BASIC CONCEPTS OF CHEMISTRY -NCERT TEXT-BOOK EXERCISES (WITH HINGS AND SOLUTIONS)
  1. Calculate the molar mass of the following: (i) H(2)O (ii) CO(2) (i...

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  2. Calculate the mass per cent of different elements present in sodium su...

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  3. Determine the empirical formula of an oxide of iron, which has 69.9% i...

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  4. Calculate the amount of carbon dioxide that could be produced when ...

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  5. Calculate the mass of sodium acetate (CH3COONa) required to make 500 m...

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  6. Calculate the concentration of nitric acid in moles per litre in a sam...

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  7. How much copper can be obtained from 100 g of copper sulphate (CuSO(4)...

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  8. Determine the molecular formula of an oxide of iron in which the mass ...

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  9. Calculate the atomic mass (average) of chlorine using the following da...

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  10. In three moles of ethane (C(2)H(6)), calculate the following: (i) N...

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  11. What is the concentration of sugar (C(12)H(22)O(11)) in mol L^(–1) if ...

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  12. If the density of methanol is 0.793 kg L^(–1), what is its volume need...

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  13. Pressure is determined as force per unit area of the surface. The SI u...

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  14. What is the SI unit of mass? How is it defined?

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  15. Match the following prefixes with their multiples:

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  16. What do you mean by significant figures?

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  17. A sample of drinking water was found to be severely contaminated with ...

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  18. Express the following in the scientific notation: (i) 0.0048 (ii) 2...

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  19. How many significant figures are present in the following? (i) 0.002...

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  20. Round up the following upto three significant figures: (i) 34.216 ...

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