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The oxidation of nitric oxide to nitrogen dioxide is2NO(g) + O2(g) ® 2NO2(g)
If 100.0 mL of NO (at STP) reacts with 400.0 mL of O2 at STP, calculate the partial pressure of NO2 in the final reaction mixture.
Calculate the energy of attraction (in eV) between a cation with a valence of +2 and an anion with a valence of -3,
During the course of an experiment, a 0.300 M NaCl solution with an initial volume of 25.0 ml is diluted to a total final volume of 26.0 ml. What is the concentration of NaCl in the final solution?
Suppose that you wished to prepare copper(II) carbonate by a precipitation reaction involving Cu2+ and CO32-. Select all of the pairs of reactants that could be used as solutes
Multiple choice questions in free energy change and What is the free energy change in kJ/mole?
A 24 L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16 L?
The heat of solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 23.5°C, what is the minimum temperature reached by the solution.
a solution contains 55 grams of ascorbic acid in 250 g of water freezes at -2.34 degrees C. calculate the molar mass of the solute
how much of heat is gained by nickel when 500 g of nickel is warmed from 22.4 to 58.4C?
3AgNO3 + Na3PO4 --> Ag3PO4 + 3NaNO3 Silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. How many grams of silver phosphate are produced?
A saturated solution of CaF2 had a calcium ion concentration of 2.20 x 10^-4 M. What is the Ksp for CaF2?
Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is: 2 Li(s) + Ag2CrO4(s) -> Li2CrO4(s) + 2 Ag(s)
A bicycle tire is filled with air to a pressure of 85.0 psi at a temperature of 19°C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58°C. The volume of the tire increases by 2.8%. What is the new pressure in the ..
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