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Question- A 0.52 g sample of sucrose (MW = 342. g/mol) is burned in a bomb calorimeter that has a heat capacity of 3.61 kJ/oC. The temperature of the calorimeter increases by 2.38oC. Calculate the molar heat of combustion of sucrose using the data from this experiment. Since this experiment is carried out under conditions of constant volume, we are measuring ?E. Your answer should be in kJ/mol and entered to 3 sig. fig.
Express your answer to two significant figures and include the appropriate units.
If all connections in the apparatus are not airtight and some hydrogen gas escapes during the reaction
If the concentration of lead iodide [PbI2] in a saturated aqueous solution is 1.5 x 10-3 M, what is the Ksp of PbI2
A thief plans to steal a gold sphere with a radius of 28.8 cm from a museum. If the gold has a density of 19.3 {rm g/cm}^3, what is the mass of the sphere? [The volume of a sphere is V = (4/3)pi r^3.]
Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br- and C9H7N is quinoline
The rate constant for a certain reaction is = 6.10×10?3 . If the initial reactant concentration was 0.750 , what will the concentration be after 18.0 minutes
A 20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
The house is losing heat to the outside air through the walls and windows at a rate of 60,000 kJ/hr while the energy generated within the house from people, lights,and appliances amounts to 4,000 kJ/hr.
How many moles of potassium carbonate will be produced if 476 g of potassium hydrogen carbonate are heated
Sulfur dioxide in the effluent gases from coal-burning electric power plants is one of the principal causes of acid rain. One method for reducing SO2 emissions involves partial reduction of SO2 to H2 S
Solid CaF2 is shaken with a 0.010M solution of NaF. What will be the concentration of Ca2+ ion in the resultant saturated solution? (Ksp for CaF2 = 4.0 x 10-11)
An Indy race car can travel 111 m/s. What is the speed of the car in miles per hour? (Given: 1 mi = 1.61 km, and 1 h = 3600 s)
a gc base-pair has one more hydrogen bond than an at base-pair.bull suppose that one hydrogen bond contributes -0.616
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