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Chrome File Edit View History Bookmarks People Window Help 100% Wed 11:12 PM Q E Blinn College Bryan Camp X C www.saplinglearning.com/ibiscms/modlibis/view.php?id-3019144 Sapling Learning I Blinn College Bryan Campus CHEM 1411 325) ONES I Activities and Due Dates I HW 8 My Assignment Resources Attempts Score 2/9/2016 11:55 PM CA 59.7/100 11130/2016 07:07 PM Gradebook OAssignment Information Print Calc Periodic Table Availa Not Set 95 Question 13 of 19 12/9/2016 11:55 PM Due Date: Sapling Learning Points Possible Grade Category: Graded The following equation is the balanced combustion reaction for CsHs: De ption olicies Homework If 6.500 gof CeHe is burned and the heat produced from the burning is added to 5691 g of You can check your answers. water at 21 °C, what is the final temperature of the water? You can view solutions when you complete orgive up on any question. You can keep trying to answer each question until 95 you get it right or give up. You lose 5% of the points available to each answer in your question for each incorrect attempt at that answe o Textbook O Help With This Topic oWeb Help & Videos O Technical Support and Bug Reports A Previous ® Give Up & view solution 2 Check Answer 0 Next Exil O 2016 Sapling Learning, Inc. C 20 about us careers partners privacy policy terms of use contact us help

Explanation / Answer

moles of C6H6 = mass/molar mass
= 6.5 / (78)
=0.0833 mol

2 mol of C6H6 releases 6542 KJ

heat released = (6542/2)*0.0833 KJ = 272.583 KJ = 272583 J

Heat absorbed by water = 272583 J

This will increase temperature of water

use:
Q = m*C (Tf-Ti)
272583 = 5691*4.184*(Tf - 21)
Tf - 21 = 11.4 oC
Tf= 32.4 oC

Answer: 32.4 oC

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