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A student dissolves 0.2975 g of the unknown weak acid to give 100. mL solution. S/he obtains the following titration curve for his/her best titration. At the equivalence point, 19.0 mL of 0.1000 M NaOH was added.
Determine the final temperature achieved in this expansion, and the corresponding work done by the gas for the cases that it is 1) Helium, 2) Krypton.
Calculate the rpoportion of I2 (iodine) molecules in their ground state, first excited stated
1) Many household cleaning products contain oxalic acid H2C2O4, , a diprotic acid with the following dissociation constants: Ka1=5.9E-2 and Ka2=6.4E-5 Calculate the equilibrium concentration of C2O4^2- in a 0.20 M solution of oxalic acid
Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction.
What is the density of a block of marble that occupies 253 cm3 and has a mass of 752 g?
When 1717 J of heat energy is added to 40.0 g of ethanol, C2H6O, the temperature increases by 17.5 °C. Calculate the molar heat capacity of C2H6O.
What is the pH of a solution made by mixing 25.00mL of 0.200M CH3COOH with 10.00mL of 0.200M NaOH? Ka of acetic acid is 1.8 x 10^-5.
The temperature of the glucose solution is 20degrees Celsius. What pressure drop must be applied across the membrane to stop the flow of water into the glucose solution. Assume that the glucose concentration is 1 mg mL^-1 and that the molecular we..
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
determined the acid ionization constant (Ka) for the acid to be: Ka = 2.53 X 10-6. What is the weak acid and what is Kb for the conjugate base of the weak acid?
Describe two different methods one could employ to determine if two white solids, that have identical melting points, are the same compound or two different compounds
Benzene is a trace component of gasloine. What is the mole ratio of benzene to n-octant in the vapor above a solution of 40.0% benzene and 60.0% n-octane by the mass
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