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Ammonia is made industrially by reacting nitrogen and hydrogen under pressure, at high temperature, and in the presence of a catalyst. The equation is N2(g)+3H2(g)---->2NH3(g). If 4.0mol of H2 react, how many moles of NH3 will be produced.
A sample of gas occupies 10.5 L at 600 torr and 50C. What volume will it occupy at STP?
Consider the following electrochemical cell at 298 K. One compartment contains a 1.00-M solution of silver nitrate. The other compartment contains a saturated solution of silver iodide
Determine which ion will precipitate first and at what concentration of sulfate ion will the first precipitate begin to form?
What is the rate constant? what would happen if you increase the concentration of NO by a factor of 1.9?
It takes 49.0 J to raise the temperature of a 9.60 g piece of unknown metal from 13.0 degrees celsius to 24.5 degrees celsius. what is the specific heat for the metal?
What NaCl concentration results when 219 mL of a 0.740 M NaCl solution is mixed with 492 mL of a 0.350 M NaCl solution?
Compound A, C9H12, undergoes nitration to give 3 products. The 1H NMR spectrum of A shows a complex three-proton multiplet at 6.92-6.99 ? and a nine-proton singlet at 2.34 ?
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?
Aminotransferases are enzymes that catalyze the interconversion of amino acids and ?-keto acids. In this way, they can provide the carbon needed for gluconeogenesis from amino acids supplied by dietary protein
Calculate the molar concentration of OH- ions in a 7.5×10^-2 M solution of ethylamine C2H5NH2(Kb = 6.4x10^-4).
Calculate the frequency (in Hz) of light necessary to move an electron in a He+ ion from the n =2 to n =4 energy level. The Rydberg constant for a helium ion is R = 4.390 x 107 m-1
Calculate the enthalpy change that occurs when 1.00 kg of acetone condenses at its boiling point (329.4 K). The standard enthalpy of vaporization of acetone is 29.1 kJ · mol -1 .
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