Why does crude oil contain sulfur? Posted on January 31, 2017 by admin Why does crude oil contain sulfur? Why does crude oil contain sulfur? Why does crude oil contain sulfur? READ ALSO : A coil of current-carrying Nichrome wire is immersed in a liquid. (Nichrome is a nickel–chromium–iron alloy commonly used in heating elements.) When the potential difference across the coil is 12 V and the current through the coil is 5.2 A, the liquid evaporates at the steady rate of 21 mg/s. Calculate the heat of vaporization of the liquid (see Section 18-8).