In　this　paper,　we　investigate　the　vanishing　adiabatic　exponent　limits　of　the　Riemann　solutions　to　the　isentropic　Euler　equations　for　power　law　with　a　Coulomb-like　friction　term.　The　formation　of　delta　shock　waves　and　vacuum　states　is　identified　and　analyzed　as　the　adiabatic　exponent　vanishes.　Unlike　the　homogeneous　case,　the　Riemann　solutions　are　no　longer　self-similar.　We　rigorously　justify　that,　as　the　adiabatic　exponent　vanishes,　the　Riemann　solutions　to　the　isentropic　Euler　equations　for　power　law　with　a　Coulomb-like　friction　term　converge　to　the　Riemann　solutions　to　the　zero　pressure　gas　dynamics　model　with　a　body　force.　Moreover,　we　also　give　some　numerical　results　to　confirm　the　theoretical　analysis.　©　2019　Author(s).