How much energy in kJ is required to heat a calorimeter whose heat capacity is 202.0...
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 451 K: 2Fe2O3(s) + 3C(s) + 4Fe(s) + 3CO2(g) P Flag question Answer: Question 5 Not yet answered Calculate the work (in kJ) when 2.20 moles of methane react with excess oxygen at 470 K: Marked out of 1.00 CH4(g) + 20 (g) + CO2(g)...
Question Not yet answered A reaction at 4.21 atm produces 24.6 L of a gas and evolves 69.7 kJ of heat (exothermic). Calculate the change in internal energy of the system (in kJ). Marked out of 1.00 Answer: Flag question Question 8 Not yet answered Marked out of 1.00 1.495 g of an unknown hydrocarbon (108.1 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter,cy, = 5.294 kJ/°C and AT -6.744 °C. Find AE for...
A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.3320 g sample of naphthalene (C10Hg) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.092x103 g of water. During the combustion the temperature increases from 22.54 to 25.04 °C. The heat capacity of water is 4.184 Jg=1°C-1 The heat capacity of the calorimeter was determined...
8300 J of heat are added to a system. The surroundings do 9000 J of work on system. What is AE in J? Question 9 Not yet answered Marked out of 100 Answer: Flag question Question 10 Not yet 4100) of heat are extracted from a system. The system does 1900 J of work on the surroundings. What is AE in ? Marked out of Answer: Flag question
Question 17 Not yet answered Calculate the increase of entropy (in J/K) when 73 g of ice melts at 0 °C and 1 atm. (The heat of fusion for ice is 6,000 J/mol.) Marked out of 1.00 Answer: P Flag question Calculate the change in entropy (in J/K) when 98.2 g of water is heated from 28.7 °C to 76.7 °C at 1 atm. (The specific heat is 4.184 J/(g-K).) Question 18 Not yet answered Marked out of 1.00 Notice...
The heat capacity of a bomb calorimeter is found to be 5.25 kJ/degree C. When a 1.94 g sample of glucose (C_6H_12O_6, MM = 180.l6) is burned in the calorimeter, the final temperature recorded was 36.0 degree C. What is the quantity of heat (in kJ) release or absorbed by the reaction if the heat of combustion for glucose is -2.81 times 10^3 kJ/mole. (please include the proper sign in your numerical answer) What is the initial temperature (in degree...
The heat capacity of the calorimeter is 12.32 kJ/^ C . The measured temperature increase was 20.18 degrees * C . Determine the heat of combustion in kper mole of sugar. The molar mass of sucrose is 342.3g / (mol) . A 20.0 g sample of the sugar sucrose (C12H22011) is combusted in a bomb calorimeter. C12H22011 (s) +1202 (g) - 12CO2(g) +11H2O The heat capacity of the calorimeter is 12.32 kJ/°C. The measured temperature increase was 20.18°C. Determine the...
A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods.Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter.In the laboratory a student burns a 0.796-g sample of glutaric acid(C5H8O4) in a bomb calorimeter containing 1000. g of water. The temperature increases from 25.70 °C to28.30 °C....
Question 17 What is the heat capacity of the calorimeter, calonimeten (in kJ/°C) of a bomb calorimeter if burning 1.0 g of benzoic acid in it causes the temperature to raise by 7.25 °C? Given A H comb = -26.38 kJ/g. C 191.26 C 3221.53 C25.34 c 3.64 -3.64
a reaction inside a bomb calorimeter releases 142.8 kj of energy and the bomb calorimeter increases in temperature by 52.7 C. What is the heat capacity in kJ/C of the bomb calorimeter