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The temperature dependence of the equilibrium constant is given by the equation: Ln K = Ln A - delta H (standard enthalpy change)/RT. Solve for k (equilibrium constant).
Put in order the following molecules in terms of the Permeability of the molecule across a membrane by simple diffusion at pH 7.
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.508g/L at 25C and 721mmHg?
an irregular shape of metal has a mass of 54.6 grams and displaces 2.83 cm^3 of water when dropped into a graduated cylinder filled with water. What is the identity of the pure metal?
The solid and toluene together weigh 58.34 g. The density of toluene at the temperature of the experiment is 0.864 g/mL. What is the density of the solid?
Three gases (8.00 g of methane, 18.0 g of ethane, and an unknown amount of propane were added to the same 10.0-L container. At 23.0 degrees C, the total pressure in the container is 4.50 atm. Calculate the partial pressure of each gas in the conta..
Titration of a Weak Acid with a Strong Base, Find the pH before, at, and after equivalence point of 35 ml of 0.15 M lactic acid with 0.18 M NaOH.
A reaction occurs at a rate of 2.25 *10-2 moles per liter per second at 332 K. Estimate the increase in the rate of a reaction when the temperature increases to 332 K. Express the rate in moles per liter per second.
Calculate the freezing point of each of the solution 0.220 g C12H22011 of sucrose, , a nonelectrolyte, dissolved in 1.75 kg of water.
If the total pressure in the cylinder is 2430 mmHg, what is the partial pressure of each of the components? Assume constant temperature.
2Na + 2H2O → + H2 How many moles of hydrogen gas are produced when 0.066 mole of sodium is completely reacted?
sample melts before you were ready to read the temperature. Should you cool the capillary and start again or prepare a fresh sample? Explain.
When 0.0172 mol HI is heated to 500 K in a 2 L sealed container, the resulting equilibrium mixture contains 1.9 g of HI. Calculate Kc for the decomposition reaction 2HI(g) *) H2(g) + I2(g) .
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