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The most important commercial process for converting N2 from the air into nitrogen-containing compounds is based on the reaction of N2 and H2 to form ammonia (NH3):
N2(g) + 3 H2(g) 2 NH3(g)
How many moles of NH3 can be formed from 3.0 mol of N2 and 6.0 mol of H2?
Calculate the pH of 0.0021 M aminoethanol (pKa = 9.38) in 0.0030 M sodium aminoethanoate (a salt of the conjugate base of aminoethanol).
A cell measured by a student was found to be -0.461V against a Ag/AgCl reference electrode (0.222V). What is the potential when measured against SCE and NHE
a sample of argon gas is at a pressure of 1.24x10^4 kpa and a temperature of 24c in a rigid 25-L tank. How many moles of argon does this tank contain?
Calculate the change of entropy for the system when 2.00 moles of a diatomic ideal gas is changed from 25 degrees celsius and 1.5 atm to 135 degrees Celsius
How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.1 L of 0.20 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.82
Glutamine, glycine, aspartic acid, threonine, isoleucine and arginine form a hexapeptide. how many charged groups would this peptide have at pH 13. what are they
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. If 65.0 g of Na are obtained, how many amps are required to produce this in 7.50 hours
Calculate the molarity of a solution made by adding 26.1 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask,
What is the change in internal energy (in J) of a system that absorbs 0.751 kJ of heat from its surroundings and has 0.314 kcal of work done on it
Based on the structure of the compound why is benzoic acid and p tert butylphenol soluble a mixture of ethanol and water
draw an energy level diagram for Hydrogen starting at n=2 and ending at n=6. (n=1 transitions are high-energy transitions and emit in the ultra-violet region).
A solution that contains 87.2g of an unknown compound in 392.4g of water freezes at -8.00 degrees C. Calculate the molar mass(in units of g/mol) of the solute. Kf of water is 1.86 degrees C/m.
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