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In a certain experiment, 29.52 mL of 1.21 M HI were added to 35.00 mL of 0.951 M KOH in a simple (coffee cup) calorimeter. Prior to addition of the HI, the temperature of the solutions was 23.50 oC. After the solutions were mixed, the temperature in the calorimeter rose to 30.40 oC. a. Determine the heat transfer (q) experienced by the calorimeter for this reaction. b. Determine the Hrxn per mole of HI. c. Identify whether this reaction is endothermic or exothermic and explain your reasoning.
which of the following is the correct chemical formula for a formula unit of aliminum
A solution is prepared by dissolving 11.5 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock solution is added to 52.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
Can you please explain to me the process of how to calculate the energy (in kJ/mol) required to remove one electron in the ground state for He+ using the Bohr model.
A man fills a balloon with .5 liters of air. He then puts the ballon into the oven and heats it to 204 degrees celcius. the temperature outside the oven was 20 degrees celcius. what is the new volume of the balloon and what law is used to solve th..
if you started a ride with ice packs that held 1600g of frozen water at 0 degree celius, and the temperature of the water at the end of the ride is 32 degree celius, How many calories of heat energy were absorb
Question- Sodium metal has an electron binding energy Eb=4.41x10^-19 J. If sodium is irradiated with 439nm light, what is the maximum kinetic energy of the ejected electron
If a reaction mixture initially contains 0.159 M SO2Cl2 , what is the equilibrium concentration of Cl2 at 227 C?
For the reaction of the ammonium ion with nitrous acid, the net reaction is NH4 (aq) + HNO2(aq) yields N2(g) + 2H2O (l) + H (aq) If the initial concentration of nitrous acid is 1.00 M and after 48.1 s has elapsed, the concentration of nitrous acid..
The concentration of a biomolecule inside a rod-shaped prokaryotic cell is 0.0053 M. Calculate the number of molecules inside the cell, which is 2.9um long and 1.4um in diameter.
If a mixture of argon and xenon have total pressure of 870 torr and the pressure of the argon is 539 torr., what would be the mol ratio of the gases
Calculate the pH and pOH of each of the following solutions. [H3O+] = 1.5x10^-8 M? [H3O+] = 1.0x10^-7 M? [H3O+] = 2.2x10^-6 M
aluminum may be formed by the passage of 60,714 C through an electrolytic cell that contains a molten aluminum salt.
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