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ATOMS AND MOLECULES
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DINESH PUBLICATION-ATOMS AND MOLECULES-LONG ANSWER
- (A)The mass of one molecule of a substance is 4.65xx10^(-23)g. What is...
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- Which has more atoms? (a)10g of nitrogen (N(2))? 10g of ammonia (N...
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- (a)Explain with the help of a labelled diagram an acitivity for the ve...
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- (a)Give one point of difference betweeen an atoms and an ion. (b)Giv...
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- (a)What do the following observations stand for? (i)2O (ii)3O(2) (...
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- (a)Define atomic mass unit. How is it linked with relative atomic mass...
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- With the help of a labelled diagram describe an activity to demonstrat...
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- Find the mass of 10 moles of sodium sulphite (Na(2)SO(3)) (b)Calcula...
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- With the help of an activity, show that there is no change in mass whe...
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- Write the chemical formulae of (i) Barium chloride (ii) Magnesium...
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- Name the elements which constitute? (i) Washing soda (ii) Baking s...
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- Enlist the main postulates of Dalton's Atomic theory. Give two limitat...
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- Explain the following (i) Law of conservation of mass (ii) Gram atomic...
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- Weight of copper oxide obtained by heating 2.16 g of metallic copper w...
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- What is the necessity of mole? Describe gram atomic mass and gram mola...
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- What weight of calcium has the same number of atoms as are present in ...
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