1.0 mol of Cu(NO3)2 is dissolved in 1000 g of water. What is the molality of...

1.0 mol of Cu(NO3)2 is dissolved in 1000 g of water. What is the molality of the solution for use in colligative property equations? The answers are 1, 2, 3, 4, or cannot be determined.

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Expert Solution

Given number of moles of Cu(NO₃)₂ = 1.0 mol

Mass of water = 1000 g = 1 kg Since 1 kg = 1000 g

We know that molality , m = number of moles of solute / Mass of solvent in Kg

= number of moles of Cu(NO₃)₂ / Mass of water in kg

= 1.0 mol / 1 kg

= 1 m

Therefore the molailty of the solution is 1 m

queen_honey_blossom answered 6 months ago

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