A 5% solution of sucrose (c12h22o11) is isotonic with 0.877% solution of urea. Nh2conh2 ) calculate the molecular mass of urea.[ans. : 59.99 g mol1]
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J chadwick discovered presence of a Neutron in the nucleus of an atom show the three substance atomic particles of an atom electron proton and neutron electron are the negative charge Proton are the positive charge and neutron ok
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