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How much (in ppm) Mg metal ions present in 75 mL that was obtained from a...

How much (in ppm) Mg metal ions present in 75 mL that was obtained from a 0.2 g/L MgO stock solution?

Mg 24.31 g/mol

MgO 40.3 g/mol

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0.6786 ppm Mg metal ions present in the 75 mL solution.

The detail calculation is shown below.

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