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What is the [H3O+] of a buffer that consists of 0.154 M CH3CH2COONa and 0.645 M CH3CH2COOH? Ka of propanoic acid, CH3CH2COOH is 1.3 x 10-5. Use E notation and 3 significant figures.
Concentrated acetic acid is a Class II combustible liquid. What is the molecular weight of acetic acid that will form 2 moles of CO2 assuming complete combustion?
Compute the difference in pressure between CH4 and an ideal gas if 14.0 moles of gas are in a 6.00 litres tank at the temperature of 21.1 degree celsius . The van der Waals constants for CH4 are a =2.300 L^2 x atm/mol ^2 and b=0.0430 L/mol.
Eight electrons can freely move in a box whose dimensions are 4m x 1m x 1m. sketch the occupied energy states and write the equation of the degenerated energies, including the quantum numbers, from the occupied states.
What time will it take 10.0 mL of Chlorine gas to effuse through a porous barrier when it has been noticed that 76.3 min are needed for 10.0 mL of Hydrochloric acid gas to effuse through the same barrier.
When the stopcock between the manifold and the flask is opened, the pressure in the system is 287 torr. Assuming no temperature changes, what is the volume of the manifold
A 41 kg person drinks 250. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 17% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
A 160.0 L helium tank contains pure helium at a pressure of 1870 psi and a temperature of 298 K. How many 3.5 L helium balloons can be filled from the tank
If 3.50 g of H2S are used in the above reaction, what will be the theoretical yield of water in grams?
What is the flow rate of pure molasses from the crystallizer, m4. What is the fraction of the feed that bypasses the crystallizer
What is the maximum number of grams of NaCl that can be added to 4.0 L of a 0.0090 M lead(II) chloride solution (without changing the volume significantly)
Calculate the hydronium ion concentration and the pH after the addition of 0.25 mL of 0.10 M HCl to each one.
What volume would be occupied by 100 g of oxygen at a pressure of 1.50 atm and a temperature of 25ºC?
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