Question

At 25°c how many gm of Nacl (solute) should be dissolved to make 15% w/v 300ml solution?​

Answer 1

Explanation:

$mass\% = \frac{mass \: of \: solute}{mass \: of \: solution} \times 100$

$15 = \frac{mass \: of \: nacl}{300} \times 100$

$mass \: of \: nacl = 45 \: g$

Therefore , it is your answer.

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