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Answer 1 · 2017-09-08T10:35:13

33.34%

To start of,

Concentration of solution by mass percent is equal to mass of solute divided by the mass of solvent multiplied by hundred

$"Concentration of solution by mass %" = "mass of solute"/"mass of solvent" *100%$

Mass of solvent is given: 1500 g

Mass of solution is equal to mass of solute added to mass of solvent

$m_"solution" = m_"solvent" + m_"solute"$

$rarr m_"solute"=m_"solution"-m_"solvent"$

putting values in:

$m_"solute"=2000g-1500g= 500g$

Back to formula

$"Concentration of solution by mass %" = "mass of solute"/"mass of solvent" *100$

$darr$

$"Concentration of solution by mass %" = "500g"/"1500g" *100 %= 33.34%$

Hope that this helps. :)