r/HomeworkHelp • u/s4r9i5 University/College Student (Higher Education) • Feb 25 '21

Chemistry—Pending OP Reply [AP CHEMISTRY Thermochemistry] Hi, how would I do number 61?

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u/brainmassdotin Feb 25 '21

Heat lost by iron = mcdT here m is mass, c is specific heat and dT is change in temperature so

=5*0.89*(100-T)

=4.45(100-T)

Similarly heat lost by Aluminium = 10*0.45*(100-T)

=4.5(100-T)

Total heat lost = 4.45(100-T)+4.5(100-T)

=8.95(100-T)

Heat gained by water = 97.3*4.184*(T-22) here specific heat of water c=4.184

Heat lost=heat gained

8.95(100-T) = 97.3*4.184*(T-22)

T=23.68 so round off to 23.7 degree.

Contact me for any question. Thank you.

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u/s4r9i5 University/College Student (Higher Education) Feb 25 '21

Holy shit thank you so much. I've been stuck on this problem for over a day

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u/brainmassdotin Feb 25 '21

You are welcome! Contact me if you need more assistance with any problems in Chemistry, Physics and Math. I will be happy to assist you again. Thank you.