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Chemistry 7 Online
OpenStudy (anonymous):

what is the average mass of a single phosphorus atom in grams

OpenStudy (anonymous):

1 mole of phosphorus weighs 30.974g 1 mole is 6.02x10^23 atoms 1 atom of P weighs 30.974/6.02x10^23 = 5.15x10^(-23)g or 0.0000000000000000000000515g

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