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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
- What do the following abbreviations stand for ? (i) O , (ii) 2O ,...
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- What do the symbols, H(2), S and O(4) mean in the formula H(2)SO(...
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- (a) In water from does oxygen gas occur in nature ? (b) In what fo...
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- What is the difference between 2H and H(2) ?
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- What do the following denote ? (i) N, (ii) 2N, (iii) N(2) , (iv) 2...
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- What is the significance of the formula of a substance ?
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- What is the significance of the formula H(2)O ?
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- The molecular formula of glucose is C(6)H(12)O(6). Calculate its molec...
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- Calculate the molecular masses of the following : (a) Hydrogen, H(2)...
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- Calculate the molecular masses of the following compounds : (a) Met...
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- Calculate the molecular masses of the following compounds : (a) Me...
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- Calculate the molecular mass of ethanoic acid, CH(3)COOH. (Atomic ma...
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- Calculate the molecular mass of nitric acid, HNO(3). (Atomic masses : ...
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- Calculate the molecular mass of chloroform (CHCl(3)). (Atomic masses...
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- Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses...
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- Calculate the molecular masses of the following compounds : (a) Hy...
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- State the law of conservation of mass. Give one example to illustrate...
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- State the law of constant proportions. Give one example to illustrate ...
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- (a) State the various postulates of Dalton's atomic theory of matter...
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- (a) What is the significance of the symbol of an element ? Explain w...
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