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What is the total enthalpy change when 100.0 g of solid NH3 at -150.0 degrees Celcius...

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Chemistry

What is the total enthalpy change when 100.0 g of solid NH3 at-150.0 degrees Celcius is changed to gas at 100 degreesCelcius?

I've done this problem several times and keep getting the answerof 223 kj, but in class we were told the correct answer is 237 kj.Please show all your steps/work so I can see what I'm doing wrong.Thank you!

Answer & Explanation Solved by verified expert
3.7 Ratings (585 Votes)
Mass of ammonia 100 g 01 kgInitial temperature 150 oCFinal temperature 100 oCMelting point of ammonia 7773 CBoiling point of ammonia 3334 CEnthalpy of    See Answer
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