Chemistry, 22.04.2021 14:00 20copstevens

2. A 0.45g sample of mineral ore is analyzed for chromium and found to contain 0.560mg Cr2O3. Express the concentration of Cr2O3 in the sample as:
(a) Percent (%)
(b) Parts per thousand (ppt)
(c) Parts per million (ppm)
(d) Parts per billion (ppb)

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2. A 0.45g sample of mineral ore is analyzed for chromium and found to contain 0.560mg Cr2O3. Expr...