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What is delta U when 1.00 mol of liquid water vaporizes at 100 degrees C? The heat of vaporization is 40.66kJ/mol at 100 degrees C.
Calculate the pH of a solution resulting from the titration of 50mL of 0.033M HBr with 25 mL of 0.117M KOH. Give your answer to two decimal places.
You wish to prepare an HC2H3O2 buffer with a pH of 5.44. If the pKa of this is 4.74, what ratio of C2H3O2-/HC2H3O2 must you use. Calculate the pH of a buffer that is 0.058 M HF and 0.058 M LiF.
A sample of neon gas used in a neon sign occupies a volume of 1.50 L at a pressure of 630 torr. Calculate the volume of the gas if the pressure in the glass tube of the sign is 793 torr.
What is the pH of 30.00 mL of 3.45x10¡7 M 2-Oxopropanoic acid. (Note: any higher order polynomials must be reduced to at least a quadratic.)
The standard enthalpies of formation of SO3(g), S(g) and O(g) are -359.7, +278.8 and +249.0 kJ mol-1, respectively. Use these data to calculate the average bond energy (in kJ mol-1) of the S=O double bond.
What are the net ionic equations for the sequence of reactions of caco3 that occur in a woman's stomach
what is the value of delta G at 25 C for this reaction
Calculate the percent ionization of hydrazoic acid (HN3) in solutions of each of the following concentrations
A 64 L sample of dry air is cooled from 137°C to -20.°C while the pressure is maintained at 2.85 atm. What is the final volume
A 50.0-g sample of metal at 100.0 degrees C is added to 39.0 g water that is initially 23.50 degrees C. the final temperature of both the water and the metal is 28.46 degrees C.
Determine whether each of the given amounts of solid will completely dissolve in the given amount of water at the indicated temperature.
Distance between two consecutive peaks or troughs. Frequency () Number of waves per second that pass through a given point in space. How are frequency and wavelength related? Example: Are gamma rays ( = 10-12 m) a form of high or low frequency rad..
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