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An electron has kinetic energy 2.8 x 10 -23J . de-Broglie wavelength will be nearly:
(me: 9.1 x 10 -31 kg)
(1) 9.28x 10-4m
(2) 9.28 x10-7 m
(3) 9.28 x 10 -8m
(4) 9.28x 10 -10 m
Ans:(c) 9.28 x 10 -8m
Illustrate that for correct mass balance, relative amounts of two co-existing phases or microconstituents must be given by lever principle. Ans: Using lever rule
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Ask question the density of 2 molal aqueous solution of NaOH is 1.1.gram/litre. Calculate the molality of solution?
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