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Ammonium bromide decomposes according to the equation NH4Br (s) ? NH3 (g) + HBr (g) Some solid ammonium bromide is introduced into an empty reaction container; after equilibrium is established, the total pressure is 26.4 torr. Calculate the total pressure if the volume of the reaction container is then (i) doubled; or (ii) reduced 7-fold.
while heating two different samples of water at sea level one boils at 102 c and one boils at 99.2 c. Calculate the percent error for each sample from the theoretical 100.0 c
Determine the mole fraction of HO2CCH2CHOHCO2H in this solution?
In clavulanic acid there is a carbon-atom that that has an oxygen-atom, a nitrogen-atom, and a carbon atom attached to it
certain first-order reaction () has a rate constant of 1.00×10-2 at 45 . How many minutes does it take for the concentration of the reactant, , to drop to 6.25 of the original concentration?
What five chemical tests would be performed to determine the difference between the starting alkene and the alcohol product of a hydroboration-oxidation reaction
The rate expression for a particular reaction is rate=k[A][B]^2. If the initial concentration of B is increased from 0.1M to 0.3M, the initial rate will increase by which of the following factors
Calculate the energy change for the alternative reaction that yields chlorine sodide (Cl+Na-) . 2Na(s) +Cl2 (g) yeilds 2Cl+Na+(s) Assume that the lattice energy for Cl+Na- is the same as that for Na+Cl-
Calculate the pressure of dry oxygen. If the total pressure of oxygen generated over water is measured to be 638 torr and the temperature is 22 degress celcius?
If a sample is composed of 39% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
the temperature was returned to the origenal value what would be the partial pressure of each gas be?
Small amounts of hydrogen gas are often produced by reaction of zinc with HCl; Zn(s) + 2 HCl(aq) ® H2(g) + ZnCl2(aq) How many liters of H2 gas, collected over water at a pressure of 176.6 mm Hg and temperature of 22.00 °C
Someday, cars may be powered by clean H2/O2 fuel cells and electric motors. Under standard conditions, such a fuel cell can develop 1.229 volts. If the oxygen is obtained from air (at P=0.21 bar), what pressure of H2 would be required to develop 1..
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