Work Step by Step
From the definition of latent heat: $125\ g\div 78.11\ g/mol \times 30.8\ kJ/mol=49.3\ kJ$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.