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58. Assuming that sea water is an aqueous solution of NaCl its density is 1.025 g/mL at

20°  C and NaCl concentration is 3.5% the normality of the sea water is

a.  0.65 N

b. 0.68 N

c. 0.66 N

d. 0.61 N

Answer : d

(4)

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