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Chemistry 8 Online
OpenStudy (anonymous):

A teacher wants to prepare a 0.010 ppm solution of arsenic pentoxide in the laboratory for calibrating a water quality testing system. If the teacher uses 500.0 mL of water (which has a mass of 500.0 g), what mass of arsenic pentoxide should the teacher mix to get the required solution?

OpenStudy (australopithecus):

ppm is just mg/kg water has a density of 1g/mL

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