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Chemistry
1 u (amu) is equal to
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Q. $ 1 \,u $ (amu) is equal to
MHT CET
MHT CET 2010
Some Basic Concepts of Chemistry
A
$ 1.492 \times 10^{-10}\, J $
24%
B
$ 1.492 \times 10^{-7}\, J $
20%
C
$ 1.492 \times 10^{-13}\, J $
16%
D
$ 6.023 \times 10^{23}\, J $
40%
Solution:
$ 1 \, u = 1.66 \times 10^{-24} \, g $
= $ 1.66 \times 10^{-27} \, kg $
= $ 1.66 \times 10^{-27} \times ( 3 \times 10^8)^2 \, kg \, m^2 s^{-2} $
( $ \because \, E = mc^2 $ )
= 1.494 $ \times 10^{-10} \, J $