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Suppose we vaporize a mole of liquid water at 25 °C and another mole of water at 100 °C.
(a) Assuming that the enthalpy of vaporization of water does not change much between 25 °C and 100 °C, which process involves the larger change in entropy?
(b) Does the entropy change in either process depend on whether we carry out the process reversibly or not? Explain.
a a 10.0 g sample of a mixture of methane ch4 and ethane c2h4 reacts with oxygen at 25c and 1 atm to produce carbon
The student then adds water to the flask dissolving the sugar the mass is now 204.274g. calcuate the density of this solution
Balance the following ionic Lewis structures by placing the appropriate coefficients. Leave a target blank to indicate the absence of a coefficient.
What happens if student forgets to rinse the buret with a small portion of EDTA solution. (Buret contains water droplets from washing.) If this incorrect concentration of EDTAis used to calculate the ppm CaCO3
A solution containing both Mn2+ and Cd 2+ is saturated with H2S gas, after which the concentration of H is found to be .30 M. will the sulfides of these ions form a precipitate under these conditions
A 4.30 g nugget of pure gold absorbed 293 J of heat. The initial temperature was 29.0°C. What was the final temperature?
explain how and why carbon can experience sp sp2 and sp3nbspvia hybridization and what role this plays in the geometry
A sample of a gas occupies a volume of 1063 mL at 83ºC and 0.22 atm. What would be the new volume if temperature decreases to 34ºC and pressure increases to 1.22 atm
A solution is .855% HNO3 by mass. Density of the solution is 1.01 g/mL. Find [H+], [OH-], and pH.
q1 a molecule a c9h20 can be hydrogenated to give ethane. molecule a can also be reacted with hbr to form a different
Question- Determine the pH at 25 degrees celcius of a solution prepared by dissolving 0.31 mole of ammonium chloride in 1.00 L of 0.48 M aqueous ammonia.
The mixture was analyzed spectrophotometrically and found to be 1.84*10^-3 M in I3-. Calculate the molarity of I3- in the original sample
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