The molar mass of two equally sized samples of unknown gaseous compounds is shown in the table. molar mass comparison gas molar mass x is 28 g/mol y is 44 g/mol at stp, which describes the density and effusion of both gases? a.)gas x has a higher density and effuses faster than gas y. b.)gas x has a higher density and effuses slower than gas y. c.)gas x has a lower density and effuses slower than gas y. d.)gas x has a lower density and effuses faster than gas y.