What mass of nacl is dissolved in 150 g of water in a .050
msolution?

0.4383 g

Explanation:

Molality is defined as the moles of the solute present in 1 kg of the solvent.

It is represented by 'm'.

Thus,  

Given that:

Mass of solvent, water = 150 g = 0.15 kg ( 1 g = 0.001 g )

Molality = 0.050 m

So,

Molar mass of NaCl = 58.44 g/mol

Mass = Moles*Molar mass = = 0.4383 g

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