Question

pls keep the answer with solutions then l will mark u as brainlist​

Answer 1

Answer:

Explanation:

19)Given,

     200 grams of solution with weight percentage of 30% NaOH.

Therefore,

     Volume of the 30% NaOH     = (200g) / (2.13g/cm3)

                                                     = 93.9 mL

     Weight percentage of NaOH solution to be prepared = 6%

Thus,  

     30% stock solution has to be diluted 5 times to attain 6% solution.

Hence,

     Volume of water to be added = 5 x 93.9

                                                    = 469.5 mL

Answer 2

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19. Volume of the 30% NaOH = (200g)/(2.13g/cm^3)

= 93.9

Weight percentage of NaOH solution to be prepared = 6%

Thus,

30% stock solution has to be diluted 5 time to again 6% solution

Hence,

Volume of water to be added = 5×93.9

= 469.5 ml

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