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mass defect caulation (1 Viewer)

ying123123

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Oct 20, 2005
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H+H -----> He

caculate the ,mass defect?

i got the answers but dont noe where the units come fomr?

mass of hydrogen = 6.68*10-27 where di this come form?
mass of HE = 6.646 * 10-27 where did this come form?

mass defect is minus from those units
and E=mc2

2H1 +2H1 -----> 4He2 2 should be under 4


the1 is should be under 2
 

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