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84. Calculate the molality of a solution that contains 51.2g of nephthalene, in 500 mL of carbon tetrachloride. The density of

CCl4  of 1.60 g/ml

a. 0.250 m

b. 0.500 m

c. 0.750 m

d. 0.840 m

e. 1.69 m

Ans. b

(10)

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