Question

1. Calculate the wt of NaCl present in 250 mL 10%
(wt/wt) NaCl solution?
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Answer 1

Explanation:

$mass\% \: of \: compound \: = \frac{mass \: of \: component}{total \: mass \: of \: componet \: in \: solution} \times 100$

$10\% = \frac{mass \: of \: component}{250} \times 100 \\ \\ mass \: of \: component \: = \frac{10 \times 250}{100} \\ \\ mass \: of \: component \: = 25 \: gm$

Answer 2

Explanation:

mass component = 25 gm......