Ca 40.08 amu 40 amu 40 g 12.01 amu 12 amu 12 g 35.45 amu 35.5 amu 35.5 g Cu 63.54 amu 64 amu 64 g C Cl Cr H Fe 51.996 amu 52 amu 1.008 amu 1.0 amu 52 g 1g ...
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