Ch6_ thermochemistry-Ans.docx - CHEM 101 Worksheet NAME _...

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CHEM 101 WorksheetNAME _____________________________________Chapter 6Thermochemistry WorksheetReference InfoDensity of water = 1.00 g/mLCsof H2O = 4.184 J/ g • C.1.A gas absorbs 300 J of heat energy and performs 2030 J of work as it is compressed. Calculate the totalchange in internal energy (ΔE) of this process.
2.At constant pressure, q =(e)w
3.The heat change for ammonium nitrate, NH4NO3, when 4.98 g are dissolved in 50.0 mL water is 1325 J.What is ∆Hsolutionin kJ/mol for ammonium nitrate?
a.The temperature of the water in this experiment decreased.Is this process endothermic or exothermic?
b.What is the sign of ∆Hsolution? ___
4.A sheet of gold weighing 10.0 g at a temperature of 18.0 º C is placed on sheet of another metal that weighs20.0 g and is at a temperature of 55.6 º C.The final temperature of the metals is 50.7 ºC.

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Term
Spring
Professor
Bert
Tags
Thermodynamics, Heat, H2O, CHEM 101 Worksheet, g H2O

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