Molalily = moles of substance x1000/weight of solvent in gm
moles of substance = weight/molecular weight
= 52.8/180.16
= 0.293
now weight of solvent w = ?
density of water is 1.06
d = M/V
D = w.t x V/M.w
now Wt = 476 g
now molality = 0.293 x 1000/476
= 0.615
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