The present invention refers to a process to obtain a highly soluble linear alkylbenzene sulfonate. The external unit, for example a programming device, is worn with a lanyard around the neck of a hearing aid user. The electric power source to drive the toroidal electric motor is located near the ground-facing portion of the vehicle body. The invention also relates to a process for the oxidation of hydrocarbons in the presence of oxygen, a reducing agent and the precious-metal containing support compositions of the present invention. The pad’s shunt capacitance and the magnitudes of capacitances of other portions of the via are sized relative to the conductor’s inherent inductance to optimize frequency response characteristics of the via.