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A sample of ammonia gas was allowed to come to equalibrium at 400k. 2NH3(g) <--> N2(g) + 3H2(g) At equalibrium, it was found that the concentration of H2 was 0.0584 M, the concentration of N2 was 0.0195 M and the concentration of NH3 was 0.430 M. What was the initial concentration of ammonia?
48.61g od maagnesium was dissolved in diluted sulfuric acid and 490g of MgSO4. 7H2O was isolated from the solution. How many percent of impurities did the metal contain?
How many moles of HNO3 are present if 0.141mol of Ba(OH)2 was needed to neutralize the acid solution
Suppose that the microwave radiation has a wavelength of 13.2 cm. How many photons are required to heat 200. mL of coffee from 23°C to 62°C?
The product contains a three carbon chain (from the alcohol) connected to a five carbon chain (from the acid) by an ester linkage. Review the structure of an ester. The sp3 intermediate contains three oxygen atoms, two from the acid and one from t..
There are two naturally occurring isotopes of bromine. 79Br has a mass of 78.9183 amu. 81Br has a mass of 80.9163 amu.
Restricting yourself to straight-chain (unbranched) compounds, draw the structures of the possible constitutional isomers of pentene. There are two "variables" -- the position of the double bond; and cis/trans isomerization at that double bond.
Using the same sample of gas ( P1= 695 , T2 = 27 ), we wish to change the pressure to 6950 with no accompanying change in volume or amount of gas. What temperature T2, in Celsius, is needed to reach this pressure
Use ICE table and henderson-hasselbach equation to calculate pH of BUFFER A after your particular volume of acid was added to achieve pH change of 1.0.
Calculate the pH after the following additions of the KOH solution (a) 10.0 mL (b) 11.5 mL (c) 15.0 mL (the Ka for CH3COOH = 1.8 x 10^-5)
Analysis with an elaborate instrument indicates that substance A contains two elements. Substance B and substance C react to give a new substance D
What is the difference between Kc and Qc? How can you use Kc and Qc to predict the direction of equilibrium mixture to move?
Calculate the molarity of a solution of glycerol made by dissolving 38.000 mL glycerol at 15C(density: 1.2656g/mL) in enough water to make 230.00 mL of solution.
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