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At 25C, burning 0.200 mol of H2(g) with 0.100 mol of O2(g) to produce H2O(l) in a bomb calorimeter raises the temperature of the calorimeter by 0.880C, When 0.100 mol of toluene(C7H8(l)) is burned in this calorimeter, the temperature is raised by 0.615C. The equation for the combustion reaction is
C7H8(l) + 9O2(g) --> 7CO2(g) + 4H2O(l)
Calculate delta E for the above reaction in kj per mol of toluene. Hint: use delta H formation (H2O(l))=-286 kj/mol to calculate delta E formation (H2O(l)) in kj/mol, then use the hydrogen combustion reaction to calculate the heat capacity of the calorimeter. This heat capacity can then be used to solve for the heat liberated in the above reaction.
identify a chemical reagent used in this experiment that can be used to distinguish cacl2 (soluble) from CaCo3 (insoluble)
Explain why higher levels of defects are found in solids at high temperatures and close to their melting points.
methyl amine (CH3NH2 Kb= 3.6x10^-4) with 25.0 mL OF 0.10 M benzoic acid (C6H5COOH Ka = 6.3x10^-5), will the resulting solution be acidic, basic, or neutral?
Important information about Thermochemistry, Glauber's salt, sodium sulfate decahydrate (Na2SO4 * 10H2O) undergoes a phase transition (that is melting or freezing) at a convenient temp of 32 degrees C
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What is an alternative analytical procedure for determining the quantity of water
If 420 Joules are added to 20 grams of water to 30oC, what will be the final temperature of the water?
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a 1.00 L solution contains 4*10^-4 M Cu(NO3)2 and 1.6*10^-3 M ethyleneddiamine. the Kf for Cu(en)2^2+ is 1*10^20, what is the concentration of Cu+2 in the solution
An astronaut's spacesuit has a pinhole leak. If the spacesuit contains air of normal composition (78% nitrogen and 21% Oxygen),
A weather balloon at Earth's surface has a volume of 4 L at 294 K and 746 mm Hg. If the balloon is released and the volume reaches 4.19 L at 715 mm Hg.
The refractive indices at 20o C of isobutyl bromideand isobutyl choloride are 1.4368 and 1.3785 respectively.Determine the molar composition (in percent) of the mixture byassuming a linear relationship
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