Answer:
1.5 x 10-3 m solution means that
1.5 x 10-3 mole of nalorphene is dissolved in 1 kg of water Molar
mass of C19H21NO3
= 19 x 12 + 21 + 14 + 48 = 311 g mol?1
1.5 x 10-3
mole of C19H21NO3
= 1.5 x 10?3 x 311 g = 0.466g = 466
mg
Mass
of solution = Mass of solvent + Mass of solute = 1000 g + 0466 g = 1000.466 g
Thus, for 466 mg of nalorphene, solution
required = 1000.466 g
For 1.5 mg of nalorphene, solution required
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