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Verified answer
P (massa pelarut) = 250 ml x 1,1 gram/ml= 275 gram
pertama hitung massa zat dengan rumus molaritas
M = massa zat/mr x 1000/V
0,2 = massa zat / 60 x 1000/250
0,2 = massa zat / 60 x 4
massa zat x 4 = 60 x 0,2
massa zat = 12/4
massa zat = 3 gram
kemudian hitung molalitas
m = massa zat/mr x 1000/p
m = 3/60 x 1000/275
m = 3000/16500
m = 0,181818
jadi molalitasnya adalah 0,181818 molal