A certain liquid has a normal boiling point of and a boiling point elevation constant . A solution is prepared by dissolving some sodium chloride () in of . This solution boils at . Calculate the mass of that was dissolved. Round your answer to significant digits.

The given question is incomplete. The complete question is as follows.

A certain liquid has a normal boiling point of and a boiling point elevation constant . A solution is prepared by dissolving some sodium chloride (NaCl) in 6.50 g of X. This solution boils at . Calculate the mass of NaCl that was dissolved. Round your answer to significant digits.

Explanation:

As per the colligative property, the elevation in boiling point will be as follows.

T = boiling point of the solution =

= boiling point of the pure solvent =

= elevation of boiling constant =

We will calculate the molality as follows.

     molality =

i = vant hoff's factor

As NaCl is soluble in water and dissociates into sodium and chlorine ions so i = 2.

Putting the given values into the above formula as follows.  

                  m = 100 g

Therefore, we can conclude that 100 g of NaCl was dissolved.

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