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An amount of H2O vapor (gas) is condensed isothermally and reversibly to liquid water at 100ºC where it occupied a volume of 838 cm3. The standard enthalpy of vaporization of water at 100ºC is 40.66 kJ mol-1, the density of liquid water at 100ºC is 0.958 g/cm3. Find w, q, ?U, and ?H for this condensation process. (You may assume that the volume of liquid H2O is negligible compared to that of H2O vapor, and that the vapor follows the perfect gas equation of state.)
Calculate the mass, in grams for a gold sample that absorbs 225 J to change its temperature from 15 Celsius to 47 degrees celsius.
What are the two pKa values for carbonic acid? What is the pH of a 0.100M solution of potassium bicarbonate. What is the pH of a 0.100M solution of potassium carbonate
a large containerized planting that contains 79kg of soil. An analysis shows that you need to neutral 3.27 meq/100gof acidity. How much of finely ground pure CaCO3
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A cylindrical container has a radius of 2.1cm and a height of 0.62m. What is the volume of the container in dm3
Discuss the relationship between the proper functioning of enzymes and the tertiary structure of proteins
How many grams of dry NH4CL need to be added to 2.30 L of a 0.400 M solution of ammonia,NH_3 , to prepare a buffer solution that has a pH of 8.53? Kb for ammonia is 1.8*10^-5.
likely to exhibit a stable +2 oxidation state? What are their electronic configurations
Calculate ground state energy, 1st excited energy level, and wavelenght of an electronic transition between the 2 lowest energy states for an electron
A rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings.
A stock solution is prepared by adding 23 mL of 1.6 M Pb(ClO3)2 to enough water to make 50 mL. How many moles of ClO3- are in 24 mL of the stock solution?
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