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OpenStudy (anonymous):
What is the percent by mass of NaHCO3 in a solution of 40.0g NaHCO3 dissolved in 800.0mL of H2O?
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OpenStudy (aaronq):
whats the total mass of the solution?
OpenStudy (anonymous):
i think 1st of all find the mass of solvent that is H2O with the help of density, density of water=1 g/ml mass of H2O= d X v = 1 X 800= 800 g of H2O now, total mass of solution = mass of solvent + mass of solute= 800 + 40 = 840 %age of NaHCO3=40/840 X 100 = 4.76 % by mass
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