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The enthalpy of combustion of benzoic acid (C6H5COOH) which is often used as the standard for calibratie constant-volume bomb calorimeter; its value has been accurately determined to be 3226.7 kJ/mol. When 3.3715 g of benzoic acid are burned in a calorimeter, the temperature rises from 21.84 degrees celcius to 24.67 degrees celcius. What is the heat capacity of the bomb? (Assume that the quantity of water surrounding the bomb is exactly 2250 g)
Use this information to estimate the X-X (single-)bond energy in the X2H4 molecule.
Alkyl halides add to alkenes in the presence of AlCL3; yields are the highest when tertiary halides are used . predict the outcome of the reaction of t-pentyl chloride
Using a liquid sample of Na that has a molar heat of fusion of 2.06 kj/mol calculate the number of moles in a liquid sample of Na if sample releases 41.4 kj when it freezes?
How many grams of Ba(OH)2 will be needed to neutralize 76 mL of stomach acid if stomach acid is 0.14 M HCl?
Calculate the standard reduction potential and standard apparent free energy change for the transfer of a pair of electrons from FADH2 to 1/2O2. Show all calculations.
Which stage of ionization usually produces more ions and why?
A gas sample has an original volume of 760 ml when collected at 720 mm and 25degC. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 30degC?
Explain why the salt of a weak acid, as well as the acid itself, must be present to form a bu?er solution.
Draw the Lewis structure for each including formal charges and describe in paragraph format how you went about solving the problem and making sure the answer was correct.
The atomic mass of boron is 10.81 g/mol. The two naturally occuring isotopes are B-10 with a mass of 10.0129 amu and B-11 with a mass of 11.0093 amu. Determine the percent of naturally occuring B-10.
An industrial chemist studying bleaching and sterilizing prepares a hypochlorite buffer using 0.150 M HClO and 0.150 M NaClO. (Ka for HClO = 2.9x10^-8.)
what will be the pressure of the gasesous water in a 4.25 L flask at 30.0 degrees celcius.
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