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Where did the energy required to maintain the system at a constant temperature in the two isothermal processes described?
PAth A- sudden irreversible decrease in pressure from P1 to P2 ( P2<P1)
Path B- Gradual reversible derease in pressure from P1 to P2 such that the internal and external pressures remain in equilibrium at every step along the path. and how is the energy related to the amount of work that was perfromed along each path?
What is the half-life of a second-order reaction in which 45.0% of the original concentration of 1.00 M remains after 325 seconds?
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 rm J/(g cdot {^circ C}) and 1.00 rm g/mL] and that no heat is lost to the calorimeter itself, nor to the surroundings.
What is the change in internal energy (in J) of a system that absorbs 0.588 kJ of heat from its surroundings and has 0.219 kcal of work done on it?
Propose a structure for an amine of formula C4H9N, which does not liberate a gas when treated with NaNO2 and HCl, and has IR absorptions at 917 cm-1, 990 cm-1, and 1640 cm-1,
A buffer solution is prepared by dissolving 1.51 g NH3 and 3.85 g (NH4)2SO4 in enough water to make 0.500 L of solution.
How much heat does your body lose when 1.5 g of sweat evaporates from your skin at 25 C? (Assume that the sweat is only water.) The heat of vaporization of water at 25 C is 44.0 kJ/mole.
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 26.50 mL of 0.0502 M NaOH but overshoot the end point
How about for a solution of nitric acid (which has pKa of -1.4) Do the calculation for a formal concentration. of 1M and for the formal concentration of 0.1M.
What is the expected freezing point of an aqueous solution of 2.62 kg of nitric acid, HNO3 , in a solution with a total mass of 5.91 kg? Assume that the nitric acid is completely ionized.
You conduct an experiment where N2 is collected over water in a 2.12 L flask at 23.oC. At the conclusion of the experiment, the total pressure in the flask is 652. torr. What is the pressure of N2 in the flask?
25g of a hydrocarbon undergoes complete combustion leading to the formation of 77 g of CO2. What is the % of carbon in the hydrocarbon?
Calculate the molar mass of a Nonelectrolyte that lowers the freezing point of 25.00 g of water to -3.9 degrees C when 4.27g of the substance is dissolved in the water.
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