Question

357
5. How much polystyrene of molecular weight 9000 would
have to be dissolved in 100 grams of CGH to lower its
F.P. by 1.05°C ? (K CH = 4.9);
(a) 19.3 gm
(b) 193 gm
(c) 38.6 gm
(d) 77.2 gm​

Answer 1

Explanation:

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Answer 2

Answer:

193g

Explanation:

Wb=delta Tf.Wa.Mb/1000Kf