1 Answer

Dixuji · Answer 1 · 2023-02-12T03:54:51+0000

Step 1 - Understanding percentual concentration

To express the concentration of a substance as a percentual concentration, we just need to divide its mass by the total mass:

$concentration\text{ in \% = }(m_(substance))/(m_(total))*100$

Step 2 - Calculating the concentration in the pill

We want to calculate the concentration of Mg in the pill. Therefore, we'll divide its mass by the total mass of the pill:

$concentration\text{ of Mg =}(22mg)/(325mg)*100=6.8\text{ \%}$

Answer: the concentration of Mg in the pill is 6.8%

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