Which statement concerning how geologists locate an earthquake's epicenter are accurate? check all that apply A. Geologists use seismic waves to locate the center of an earthquake.
B. The epicenter of an earthquake is located at the same place as the seismograph.
C. Geologists use data from two data stations to determine the location of an earthquake.
D. Geologists use data from three or more data stations to determine the location of the epicenter.
E. A seismograph measures the difference between arrivals of P waves and S waves.

)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.