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How much time (in s) is needed for NOCl originally at a concentration of 0.0194 M to decay to 0.0026 M?
Consider the second-order decomposition of nitroysl chloride:2NOCl(g) ? 2NO(g) + Cl2(g)At 450 K the rate constant is 15.4 atm-1s-1.
(a) The fact that the BCl3 molecule is planar means that the B atom is which of the following? unhybridized sp3 hybridized sp2 hybridized sp hybridized Hint
A sample of solid having a density of 4.88 g/cm3 had an apparent mass of 16.0886. The density of the balance weights is 8.00 g/cm3. Calculate the true mass of the object.
A total of sixteen grams of steam at the temperature of 120 degree Celsius is admitted to the system. Determine the phase composition and temperature at the time when equilibrium is reestablished?
what is the pressure in millimeters of mercury of 0.0110 of helium gas with a volume of 214 at a temperature of
Another sample of the same compound, of mass 4.14 g yielded 2.11 g of so3. A third sample of mass 5.66 g, yielded 2.27 g of hno3. Calculate the empirical formula of the compound.
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.32×1014 when it is exposed to visible light of wavelength 5.10×10?7
Determine the limiting reactant and the numbers of moles of Cu will be formed If you place .092 mol of iron filling in a solution containing .158 mol of Copper sulphate,?
Chemical-plant equipment costs rarely vary in proportion to size. In the simplest case, cost C varies with size S according to the allometric equation 18 Chemical Engineering Thermodynamics C = ?S?
What is the principle quantum number for the inner transition metals? (the atomic numbers are 57 through 102, called the lanthanide series
Calculate the molar concentration of H3PO4 in this solution: Calculate the number of grams of this solution required to hold 87.5 g H3PO4:
The active ingredient in aspirin is acetylsalicylic acid (HC9H7O4) a monoprotic acid with Ka = 3.3 10-4 at 25°C. What is the pH of a solution obtained by dissolving two extra-strength aspirin tablet
Which of the following is true of the individual resonance structures which contribute to a resonance hybrid? a) each resonance structure actually exists b) each resonance structure is more stable than is the resonance hybrid c) in going from one ..
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