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a 4.5 g sample of LiCl at 25 C dissolves in 25 mL of water also at 25 C. The final equilibrium temperature of the resulting solution is 60.8 C. What is the enthalpy of solution.
Calculate ΔG for the reaction if the partial pressures of the initial mixture are PPCl5 = 0.0029 atm, PPCl3 = 0.27 atm, and PCl2 = 0.40 atm PCl5(g)--> PCl3(g) + Cl2(g)
A 95.0 gram piece of ice at 0.0 degrees celcius is added to a sample of water at 8.0 degrees celcius. All of the ice melts and the temperature of the water decreases to 0.0 degrees celcius. How many Kg of water were in the sample?
How many grams of KO2 are needed to react completely with 7.328 g of CO2.
what is the limiting reagent and the volume of CO2 formed when 11 L s2 reacts with 18 L O2 to produce Co2 gas adn SO2 gas at STP
Calculate the change in internal energy of the system and determine whether the process is endothermic or exothermic: a) a balloon is heated by adding 850J of heat. It expands,
What mass of iron is needed in order to supply the energy needed to warm 15.0mL of water (d= 1.00 g/cm3) from 23C to 37C
Concentration of a Species, One mole of NOCl gas is added to a 4.0L container. The NOCl undergoes slight decomposition to form NO gas and Cl2 gas.
A sample of calcium carbonate absorbs 45.5 J of heat upon which the temperature of the sample increases from 21.1 degrees celcius to 28.5 degrees celcius.
A mixture of three gases, A, B, and C, is at a total pressure of 9.38 atm. The partial pressure of gas A is 1.88 atm and that of gas B is 2.32 atm. What is the partial pressure of gas C?
The density of germanium is 5.325 g/cm^3 . If you made a 4 nm quantum dot of germanium, how many atoms would it contain? Assume the dot is spherical.
What is the pH at the point during a titration when 22 mL of 0.200 M HCl has been added to 33 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3. Answer in units of pH
an average concentration of dissolved gold of 5.8*10^?9 g/L. (a) How many grams of gold are in the ocean? (b) How many m^3 of gold are in the ocean?
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