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Chemistry 5 Online
OpenStudy (anonymous):

Which of the following equals one atomic mass unit? the mass of one electron the mass of one helium-4 atom the mass of one carbon-12 atom one-twelfth the mass of one carbon-12 atom

OpenStudy (nechirwan):

one-twelfth the mass of one carbon-12 atom

OpenStudy (anonymous):

Good Looks Bro !

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