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A Sardine Grows from the Soil
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Br-81= 80.92 amu Process: [convert percent into decimal form, if using a scientific calculator ignore this step] (78.918*50.69%)+(x*49.31%)=79.904 [x is the mass of Br-81] (40.0)+(49.31%x)=70.904 [combine first the values in parenthesis]
