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OpenStudy (anonymous):
what is the relative mass of an electron? A. 1/1840 the mass of a hydrogen atom B. 1/1840 the mass of a neutron + proton C. 1/1840 the mass of a C-12 atom D. 1/8140 the mass of an alpha particle
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OpenStudy (anonymous):
b is correct
OpenStudy (anonymous):
i mnot sure
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