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fergehrt
sss
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jkllllll
trrrrr
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fdfds
gg
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a
c
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fdsgg
wrewe
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1 mol มีค่าเท่ากับกี่อนุภาค
ิb
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waaaa
hjj
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1 amu มีค่าเท่ากับเท่าไร
a
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