Class 9 Chemistry WS - 7 worksheet
With the help of given Table find out the mass number of oxygen and sulphur atom Table Composition o...
Q5 Draw a neat labelled diagram representing an atom Name the three subatomic particles in the atom ...
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NCERT Solutions for Class 9 Science Chapter 4 Structure of Atom
Calculate the mass of (i) 0.5 mole of N2 gas (ii) 0.5 mole of N atoms
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CBSE 9, Chemistry, NCERT Solutions
Calculate the number of moles for (i) 52 g of He (ii) 12.044 x 10^23
