Question
#13 please. Please show work and why? Thank you.
Determine the amount of heat that must be removed from 2000 grams at steam at 9 become water at 20.0oC. o. How much heat is required to roise the temperature ot 30.0 g ot Hzo al 30 to 500C (Don't forget the phose changes) 11. xylene has the following s: M.P. 250c. B p. Boc. 120 calg. H. constant cal/g. Specific Heat ofict cal/goc, speci tic Heatud 0.30 Spect c 0.20 col/goC. How much hea is given oft when 40.0 grams of xylene has temperature dropped from 100.0oC, 0.00oca 12. Using the information above for xylene, what would the final temperature be 10 200 calories were added to a 20.0 g sample origmaly at isoc2 erature increases rom 13, 230 calories are added to of ond the heat ot Ninogen 247 oc a phase change. What he specific Answers: 1. 0.20 J/goc
Explanation / Answer
(13)
Q=mCpT
Q=230 cal
m=92 gm
So
230=92*Cp*(-182-(-247))
Cp=0.03846 cal/gm 0C
