Question
#12 please show work thank you.
e the amount 20.0 grams otiteamat g. Determine the amount of heat must be removed from 200 oms of team ca 100.00C to become that water at 20.0pC 10. How much heat is required to raise the temperature of 30.0 g at Hp al 150 C (Don't forget the phase changesi). -80 octo 11. ne has the following constants M p 250C, BP 80cc, H1 120 caig H. 360 calg. Specific Heat 0.25 cal/goc. Specific Heat 030 callgaC Specific Heat 0.20 cal/goc. How much heat is given off when 40.0 grams of kyene casas temperature dropped from 100,0oC, to o.00aC? 12. Using the information above for xylene, what would the final temperature be 10200 calories were added to a 20.0 g sample originally at 5aca 13. 230 calories are added to 92 g of liquid nitrogen and the lemperature increases trom 247oC fo -1820C, without a phase change. What is the specific heat of tquid nitrogene Answers: 1. 0.20 J/goC
Explanation / Answer
Using the information above for xylene, what would the final temperature be if 10,200 calories were added to a 20.0 g sample originally at 15oC?
answrer = 135oC
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Q=MST
HEAT +MST = MST
10200 + 20*0.25 *15 = (Tf ) *20*0.30
ANSWER =135
