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प्रश्न
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
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उत्तर
`"concentration" = "mass of solute"/"mass of solute+ mass of solvent"xx100 `
Given, Mass of salt is 2.5 gm and mass of water is 50 gm.
So, total mass of the solution = 50 gm + 2.5 gm = 52.5 gm
Hence, concentration `=2.5/52.5 xx 100 = 4.7%`
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