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A 128 G Sample of Ethanol (C2H5OH)is Burned in a Bomb

Question 19

Multiple Choice

A 12.8 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter with a heat capacity of 5.65 kJ/°C.Using the information below,determine the final temperature of the calorimeter if the initial temperature is 25.0°C.The molar mass of ethanol is 46.07 g/mol. C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(g) ΔH°rxn = -1235 kJ


A) 53.4°C
B) 28.1°C
C) 111°C
D) 85.7°C
E) 74.2°C

Correct Answer:

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