Asked by vonedtera
calculate the amount of water in grams that must be added to 5.00 grams of urea (NH2)2 CO in the preparation of a 16.2 percent by mass, and 26.2 grams of MgCl2 in the preparation of a 1.5 percent by mass solution.
Answers
Answered by
DrBob222
% w/w = (grams solute/g solution)*100
% = [grams solute/(g solute + g solvent)]
% = [5 g urea/5 g urea + g solvent)]*100 = 16.2
% = [grams solute/(g solute + g solvent)]
% = [5 g urea/5 g urea + g solvent)]*100 = 16.2
Answered by
mensah Kingsley
25.86g
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