Question

formula concentratiei
C 15
Md 10
Ms?
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Answer 1

$c = \frac{md}{ms} \times 100 < = > \frac{c}{100} = \frac{md}{ms} = > ms = \frac{100 \times md}{c} = > ms = \frac{100 \times 10}{15} = \frac{200}{3}$

Mai calculezi si tu...