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Calculate the enthalpy change that occurs when 1.00 kg of acetone condenses at its boiling point (329.4 K). The standard enthalpy of vaporization of acetone is 29.1 kJ · mol -1 .
Which corresponds to approximately 2.65 * 104 mol of electrons at the voltage of a fuel cell and calculate how much heat energy is absorbed?
Fundamentals of acids and bases - Water self ionizes to a small extent creating equal concentrations of hydronium and hydroxide ions. Find the molar concentration of these ions in water at 25 o C?
74.0 mL of a 1.80 M solution is diluted to a volume of 268 mL. A 134-mL portion of that solution is diluted using 179 mL of water. What is the final concentration.
CaC2 (s) + 2H2O (l) → C2H2 (g) + Ca(OH)2 (aq) If 32.0 g CaC2 are consumed in this reaction, how many moles of H2O are needed?
Calculate the volume of water required to reconstitute (also referred to as solubilize) the entire contents of the vial of ovalbumin to a final concentration of 6.1 mM.
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6 Cl2(g) → 4 PCl3(g) . A sample of PCl3 of mass 298 g was collected from the reaction of 75.37 g of P4 with excess chlorine.
Organic Reactions - Cyclopentadiene, Why is cyclopentadiene monomer more stable at higher temperatures although dicyclopentadiene (dimer) is more stable at lower temperatures?
A reaction mixture at 175 initially contains 522 torr of NO and 421 torr of O2. At equilibrium, the total pressure in the reaction mixture is 748 torr. Calculate Kp at this temperature.
The double-replacement reaction between silver-nitrate and sodium bromide produces silver bromide, a component of photographic film.
Calculate how the amount of AgCl(s )will change when the equilibrium is disturbed by Adding AgNO 3
Nitrosyl bromide, NOBr, is 34 percent dissociated at 25 deg. C and the total pressure is 0.25 atm. Calculate kp and kc for the dissociation.
What is the molarity (M) of a solution that contains 2.08 grams of NaOH (MM = 40.00 g/mol) in 79.65 mL of solution.
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