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A 0.3423 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.000kg of water contained therein rose from 20.22 degrees celcius to 22.82 degrees celcius. The heat capacity of the calorimeter is 2.21 kJ/C. The heat capacity of water = 4.184 J/g C.
A. How much heat was given off during combustion fo the sample of pentane.
B. What is the heat of combustion, in kilojoules, per gram of pentane
Explain Solid State Chemistry, 1) Write the balanced chemical equation for Fe2O3+2Al?2Fe+Al2O3 using the lowest possible whole number coefficients.
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Include all constitutional isomers(except those with carbon-carbon double bond or triple bonds). For each constitutional isomer, identify the functional group and indicate whether there are stereoisomers other than conformers.
State the most likely primary alcohol and hydrogen halide needed for the preparation of 1 bromoheptane.
A polyamide was prepared by bulk polymerization of hexamethylene diamine (9.22 g) with adipic acid (11.68 g) at 280 degrees C. Analysis of the whole reaction product showed that it contained 2.6 x 10-3 mol of carboxylic acid groups.
Rewrite the atomic cores in the space below. Place an electron pair between each flourine and sulur core. Write the lewis structure for SF2 in the box, distributing the remaining valence electrons so that all three atoms are in accordance with the ..
Perform a degree of freedom analysis and show that all of the unknowns can be solved.
Which of the following factors increase the likelihood that a reaction will be spontaneous? 1. Energy is released in the form of heat. 2. A liquid is generated from a solid
A buffer is initially 0.180M in 4-nitrophenol (HC6H4NO3) and 0.200M in potassium 4-nitrophenolate (KC6H4NO3). The Ka of 4-nitrophenol is 3.8*10^-4 and the buffer has a pOH = 3.47. If 0.20g on NaOH were added to 100ml of this buffer what would the ..
At a certain temperature, the pH of a neutral solution is 7.45. What is the value of Kw at that temperature
Write the molecular formula for the compound that exhibits a molecular ion at M+ = 96.0580. Assume that C, H, N, and O might be present, and use the exact masses from your text.
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