Dissolve a substance of 0.900 g in 60.0 g water, to achieve the freezing point drop of 0.150 K, the molecular weight of the material is (water Kf = 1.86 K•kg/mol) :

Dissolve a substance of 0.900 g in 60.0 g water, to achieve the freezi

1.	Dissolve a substance of 0.900 g in 60.0 g water, to achieve the freezing point drop of 0.150 K, the molecular weight of the material is (water Kf = 1.86 K•kg/mol) :
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