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(a) Define gram atomic mass of a substan...

(a) Define gram atomic mass of a substance. How much is the gram atomic mass of oxygen ?
(b) How many moles of oxygen atoms are present in one mole of the following compounds ?
(i) `Al_(2)O_(3)` , (ii) ` CO_(2)`, (iii) `Cl_(2)O_(7)` , (iv) `H_(2)SO_(4)` , (v) `Al_(2)(SO_(4))_(3)`

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The correct Answer is:
(b) (i) 3 mol , (ii) 2 mol , (iii) 7 mol , (iv) 4 mol , (v) 12 mol
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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
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  2. (a) What is meant by 'a mole of carbon atoms' ? (b) Which has more...

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  3. (a) Define gram atomic mass of a substance. How much is the gram atomi...

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  4. (a) Define gram molecular mass of a substance. How much is the gram m...

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  5. (a) What is meant by the 'molar mass' of a substance ? State the unit ...

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  6. Which of the following pair of element represents a mole ratio of 1 : ...

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  7. Which of the following correctly represents 360 g of water? (i) 2 mo...

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  8. If 32 g of sulphur has x atoms, then the number of atoms in 32 g of o...

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  9. A student wants to have 3.011 xx 10^(23) atoms each of magnesium and ...

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  10. The ratio of moles of atoms in 12 g of magnesium and 16 g of sulphur w...

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  11. If 12 gram of carbon has x atoms, then the number of atoms in ...

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  12. Which of the following has the maximum number of atoms ?

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  13. If 1 gram of sulphur dioxide contains x molecules, how many molecule...

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  14. The mass of one molecule of a substance is 4.65 xx 10^(-23) g. What is...

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  15. Which contains more molecules, 10 g of sulphur dioxide (SO(2)) or 10 g...

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  16. What weight of oxygen gas will contain the same number of molecules a...

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  17. What mass of nitrogen, N(2), will contain the same number of molecule...

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  18. If one grams of sulphur contains x atoms, calculate the number of ato...

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  19. How many grams of magnesium will have the same number of atoms as 6 ...

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  20. The mass of one atom of an element X is 2.0 xx 10^(-23) g. (i) Calc...

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