At a certain temperature the rate of this reaction is first order in with a rate constant of Suppose a vessel contains at a concentration of . Calculate how long it takes for the concentration of to decrease to of its initial value. You may assume no other reaction is important. Round your answer to significant digits.

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Find the mass in grams of 1.37x1020 particles of h3po4

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.