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At 2000°C the equilibrium constant for the reaction is Kc = 2.4 103. 2 NO(g) N2(g) + O2(g) If the initial concentration of NO is 0.100 M, what are the equilibrium concentrations of NO, N2, and O2?
A rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings.
The saturated vapor pressure of mercury is 0.0020 mmHg at 300 K and the density of air at 300 K is 1.18 g/L. (a) Calculate the concentration of mercury vapor in air in mol/L. (b) What is the number of parts per million (ppm) by mass of mercury in ..
The frequency of electromagnetic radiation required to promote an electron from n=2 to n=4 in a Bohr hydrogen atom is
.134 mole of KCl and .212 mole of CaCl2 were dissolved in water, calculate total number of Cl ions in the solution
1. Using average bond enthalpies, predict which of the following reactions will be most exothermic:
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
Calculate the theoretical yield of C_2H_5Cl when 127 g of C_2H_6 reacts with 250 g of Cl_2, assuming that C_2H_6 and Cl_2 react only to form C_2H_5Cl and HCl.
A sample of hard water contains about 2.0x10-3MCa2+. A soluble fluoride-containing salt such as NaF is added to "fluoridate" the water. What is the maximum concentration of F- that can be present without precipitation CaF2? Ksp of CaF2=5.3x10^-11.
50.0mL of 0.15 M cobalt(II) nitrate is diluted to 250 mL with water. What is the final concentration of cobalt(II) nitrate
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
Manganese forms the following oxide minerals: manganite (MnOOH), manganosite (MnO), pryolusite (MnO2), and hausmannite (Mn3O4).
What is the volume of one mole of hydrogen gas at 273 K and 760 torr? What is the volume of one mole of oxygen gas under the same conditions?
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