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Consider the following gas-phase equalibrium reaction: N2(g)+O2(g)<-->2NO(g); Kc=4.10x10^-4 at 2000 degrees C. If 6.0 mol of NO is introduced into a 1.0L container at 2000 degrees C, what is the concentration og NO when equalibrium is reached?A. 6.0E-2 MB. 6.0E0 MC. 3.0E0 MD. 2.5E-3 ME. 6.0E-2 M
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.74? Kb for ammonia is 1.8*10^-5.
A physiological saline solution contains 154mEq/L each of Na+ and Cl-. How many moles each of Na+ and Cl- are in 0.600L of the saline solution?
A 29.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Describe two independent methods for determining the atomic mass of an element. Explain how these method are truly independent.
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
Use the van der Waals parameters for chlorine to calculate approximate values of (a) the Boyle temperature of chlorine and (b) the radius of a Cl2 molecule regarded as a sphere.
Calculate the wavelength in nanometers of the spectral line in the visible spectrum of hydrogen for which n1 = 2 and n2 = 3. What color is this line?
Determine the mass of 28.56 mL of acetone and express your answer in grams? also find out the volume, of 6.54 g of acetone and express your answer , in mL?
Calculate the partial pressure of propane in a mixture that contains equal masses of propane (C3H8) and butane (C4H10) at 20.0 °C and 738 mm Hg.
The vapor pressure of chlorine dioxide (ClO2 ) is 155 Torr at -22.75 ? C and 485 Torr at 0 ? C. What is the normal boiling point of chlorine dioxide?
The mass of an average blueberry is 0.78 and the mass of an automobile is 2200kg.Find the number of automobiles whose total mass is the same as 1.0 blueberries.
Consider an experimental run at 273 rm K where the initial number of moles (n_1) is actually 1.00 rm mol, and the final number of moles (n_2) is 2.00 rm mol.
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