Iron (III) oxide chunks contain 80 ppm silica (SiO2). What is the conc – McqOptions

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1.	Iron (III) oxide chunks contain 80 ppm silica (SiO₂). What is the concentration of this impurity in mass%?
A.	0.008%
B.	0.080%
C.	0.800%
D.	8.000%
Answer» B. 0.080%

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