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CBSE Class 9 Answered

Calculate the actual mass of the atomic mass unit.
Asked by Topperlearning User | 30 Mar, 2016, 09:47: AM
answered-by-expert Expert Answer

From experiments, mass of a Carbon-12 atom = 1.9926 x 10-23 gram.

Since atomic mass unit is defined as one-twelfth the mass of an atom of Carbon-12

begin mathsize 12px style So comma space mass space of space atomic space mass space unit space equals fraction numerator 1.9926 space straight x space 10 to the power of negative 23 end exponent over denominator 12 space end fraction
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 1.6605 space straight x space 10 to the power of negative 24 end exponent space straight g end style

Answered by | 30 Mar, 2016, 11:47: AM
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