In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ? August 27, 2021March 10, 2019 by admin In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ? A. 1/√M B. √M C. 1/M D. M