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Molalitas urea adalah 4 molal, hitung molaritas urea jika massa jenis larutan urea 1,55 gr/ml…..(ar c = 12, ar h = 1, ar n = 14 dan ar o = 16)
Accepted Answer
Molality of urea = 4 molal
Density of urea solution = 1.55 g/mL
To calculate the molarity, we need to know the mass of urea in 1000 g of water.
Mass of urea in 1000 g of water = (4 mol urea/1000 g water) x (60 g urea/mol urea) = 240 g urea
Mass of urea solution = 1000 g water + 240 g urea = 1240 g
Volume of urea solution = (1240 g) / (1.55 g/mL) = 800 mL
Therefore, the molarity of urea solution = (4 mol urea/0.8 L solution) = 5 M
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