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The equilibrium constant for the reaction N2+3H2<--> 2NH3 is Kp=4.34*10^-3 at 300 C. Pure NH3 is placed in a 1.00-L flask and allowed to reach equilibrium at this temperature. There are 1.01 g NH3 in the equilibrium mixture. What is the mass of N2 in the equilibrium mixture?
The average family of four uses 400 gallons of water per day. Calculate the average number of liters per second they use. 1 liter = 0.26 gal
The decomposition of ammonia is: 2 NH3(g) ?? N2(g) + 3 H2(g). If the partial pressure of ammonia is 1.6 × 10-3 atm and the partial pressures of N2 and H2 are each 0.25 atm at equilibrium, what is the value for Kc at 400°C for the forward reaction
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. The charge on Rh is +3. What is the formula for rhodium sulfate
chlorine triflouride gas at 708 mmHg and 50 degrees celcius. what is the mass (in g) of the sample?
using a beaker that contains 100 ml of h2o thermally insulated from its surroundings one mol of solid cacl2 is mixed
To prepare 1.40 L of a buffer solution having an ionic strength of 0.130 and a pH of 7.00 would require:
H2SO4, for the first step instead of concentrated HNO3 . What changes will be observed for the initial reaction with copper metal?
The average brewed cup of coffee contains 453 mg/L caffeine. What volume (in ml) of coffee should be diluted to 25ml prior to analysis using only standard transfer pipets with integer values from 1-10ml
Find the energy of a photon of light if the wavelength of the light wave is 6.88 x 10-7 m.
When 20.0 grams of an unknown compound are dissolved in 500. grams of benzene, the freezing point of the resulting solution is 3.77°C. The freezing point of pure benzene is 5.48°C, and Kf for benzene is 5.12°C/m. What is the molecular weight of th..
an unknown sample of cu2 gave an absorbance of 0.262 in aa analysis. then 1.00 ml of solution containing 100.0 ppm cu2
The bond energies are: C H 416 kJ/mol; C C 356 kJ/mol; C C 598 kJ/mol; O O 498 kJ/mol; C O 803 kJ/mol; H O 467 kJ/mol.determine the heat of combustion of ethylene ?
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