If you filled an oxygen tank with helium would it cancel out the weight of the metal incubator or would it weigh more since it is compressed

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

Apush or pull that moves or changes and object when to objects touch

)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.