Chemistry

To prepare 100g of 19.7% by weight solution of NaOH.how many grams each of NaOH and H2O are needed?

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asked by akhmal
  1. %by mass = (mass solute)/(mass solution)
    % w/w = 19.7g NaOH in 100 g solution.
    % w/w = 19.7 g NaOH in [19.7g NaOH + (100-19.7)g H2O].

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