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What is the molal concentration m of NaCl,a strong electrolyte in water, if the observed boiling temperature of the solution is 100.361⁰C? (Kb = 0.515⁰C/m for water.)

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delta T = i*Kb*m
Solve for m; i = 2 for NaCl.

you have to know the initial grams before starting. its not given I have the same question and I can't do it

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