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The vapour pressure of solution having 2 grams of solute X (molar mass-32) in 100 grans of CS2 (vapour pressure-854 torr) is
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Since the atomic number of oxygen is =8 and atomic mass be =16yet we have given atomic mass =17. No. Of nuteron =atomic mass -atomicno. Therefore nuteron =17-8=9. Since there are 9nuteron in single atom of oxygen so12*10to the power 25atom=12*10to power
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