A sample of 4.404 4 g of catechol(C6H6O2, Mr = 110.0) is sissolved in 200.0 g of benzene(C6H6), at 26.1℃。The molality of catechol in this solution, in mol·kg –1 is注：catechol——儿茶素或邻苯二酚答案: 0.2000