Heat (q) = C.∆T
q = 1.229×2.19
= 2.69 kJ
∆H = - q/n
= - 2.69/0.0701
= -38.4 kJ
Question 3 of 20 When 0.0701 mol of an unknown hydrocarbon is burned in a bomb...
When 0.0801 mol of an unknown hydrocarbon is burned in a bomb calorimeter, the calorimeter increases in temperature by 2.19°C. If the heat capacity of the bomb calorimeter is 1.229 kJ/°C, what is the heat of combustion for the unknown hydrocarbon?
When 1.986 grams of sucrose (Molar mass 342.3 g/mol) is burned in a bomb calorimeter, the temperature of the calorimeter increases from 22.41°C to 26.63°C. If the heat capacity of the calorimeter is 4.900 kJ/°C, what is the heat of combustion of sucrose?
A 0.44 mol sample of a substance is burned in a bomb calorimeter with a heat capacity of 8.87 kJ/C. The temperature increases by 8.36 C. What is ΔHrxn (in kJ/mol) for the combustion of the substance?
155 grams of a hydrocarbon (C20H62) is burned in a bomb calorimeter that has a calorimeter constant of 3250.0 J/oC The calorimeter undergoes a 1.95 oC temperature increase as the hydrocarbon is burned. Determine the hydrocarbon's heat of combustion, ΔHcomb in kJ/mol. (Closest answer)
When 1.151 grams of sucrose (Molar mass 342.3 g/mol) is burned in a bomb calorimeter, the temperature of the calorimeter increases from 22.41°C to 26.63 °C. If the heat capacity of the calorimeter is 4.900 kJ/°C, what is the heat of combustion of sucrose?
A bomb calorimeter is filled with 4.4 atm of an unknown gaseous hydrocarbon fuel and an excess of oxygen gas at a temperature of 21 °C. The bomb calorimeter has a volume of 5 L and a heat capacity of 8.34 kJ/K. After the combustion reaction is complete the final temperature of the calorimeter is found to be 231.6 °C. Answer the following questions based on this information. (a) What amount of heat in kJ was released from the combustion...
A0.233 g sample of a hydrocarbon (MM-114.23 g/mol) is burned in a bomb calorimeter that has a heat capacity of 230 kr The temperature increases from 25.00 to 28.50 "C. Calculate the enthaply change for the reaction. Select one: 0 0.0204 0 -2840 +3950 08.05 -3950 +2850 Check
1.956 g of an unknown hydrocarbon (71.3 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter,Cv, = 5.077 kJ/ºC and ΔT =7.651 ºC. Find ΔE for this hydrocarbon in kJ/mol?
When a 3.08 g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 26.9 oC. The heat capacity of the calorimeter, measured in a separate experiment, is 6.22 kJ/∘C . The calorimeter also contains 3.00 kg of water, specific heat capacity of 4.18 J/g°C. Determine the heat of combustion of octane in units of kJ/mol octane.
2) 1.9 g of an unknown hydrocarbon (44 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter, Cv, = 5.539 kJ/°C and AT =15.874 ºC. Find AE for this hydrocarbon in kJ/mol. (Hint: This is a bomb calorimeter, where the reaction is happening at constant volume: So, what is zero? How is AE related to q (heat)?) Identify: system = Surrounding =