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CBSE Class 9 Answered

1)find the mass of 10 moles of Mg ions???? (mass of electron= 9.1*10 to the power of -31 kg)
Asked by Akansha Keshav | 06 Feb, 2011, 08:55: AM
Expert Answer
1mole of Mg++ contains= 10 electrons
10 moles contain = 100electrons.
The mass of 10 moles = 100 x 9.1 X 10 -31
 
                                           = 9.1x 10-29kg
Answered by | 10 Feb, 2011, 09:29: AM
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