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Estimate the critical pressure of a mixture of methane as well as n-hexane if the critical temperature of the mixture is known to be 200F. Contrast with the critical pressures of pure methane and pure n-hexane.
an unknown sample of n2 gave a current of 2.36microa in an electrochemical analysis. when 0.500 ml of solution
A radioactive sample was analyzed seven times for the isotope ratio with a mean of 1.52793 and a standard deviation of 0.00007. find the 99% confidence interval for the sample
A beaker with 185 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.70 mL of a 0.440 M HCl solution to the beaker.
the working substance of an engine is 1.00 mol of a diatomic ideal gas. the engine operates in a cycle consisting of
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.
Gold has cubic crystals whose unit cell has an edge length of 407.9 pm. The density of the metal is 19.3 g/cm3. Calculate the number of gold atoms in a unit cell. What type of cubi lattice does gold have
a 447 cm3 volume of na2co3 solution was warmed with an excess of sulfuric acid until all action ceased. a 5.0 l volume
The sulphate ionis trapped as water-insoluble BaSO4. The quantity ofBaSO4 obtained is 0.2070g. What is the mass percent ofsaccharin in the sample of sweetener
A 496-mL sample of a gas at 263 oC is cooled at constant pressure until its volume becomes 241 mL. What is the new temperature in oC?
Draw the Lewis Structure and make a rough three-dimensional sketch of each species.
(A) What mass of Potassium hydrogen carbonate is needed? (B) What volume of 0.32 M HCl is needed to react completely with the amount of potassium hydrogen carbonate from 2(a)
What is the equilibrium constant, Kc, for the reaction at this temperature?
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