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Digital Resources for Ch xSmartworks Secure https..//digital. ops @ Course Home MyTLab Assignment 960 Wet COM" 2.0 inbos143). 10018e Duing in a MediaW: MMG-Haane fonare Hw9 7% 10/22/17 This is a Numeric Entry question/It is worth 1 point/You have unlimited attempts/There is no attempt penalty 02 Question (1 point) a See page 23 1st attempt hseePeriodic Table 8 See Hin Calculate the heat capacity of a calorimeter if the combustion of 4.7 g of benzoic acid led to an increase in temperature of 7.1 C

Explanation / Answer

2.

Heat energy released = heat capacity of the calorimeter x change in temperature

For the combustion of benzoic acid H= -3226.6 kJ/mol

Number of moles in 4.7 g = mass/ molar mass = 4.7/122 = 0.0385 moles

Total heat energy released = 3226.6 x 0.0385 = 124.30 kJ/mol

Heat capacity of Calorimeter = 124.3/7.1 = 17.5 kJ/oC

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