0.5M sulfuric acid
问题描述：
0.5M sulfuric acid
原句是The MCMB (Japan Carbon) powders were pretreated in 0.5M sulfuric acid for 15min.The powders were then filtered and washed for 5 times with DI water.
答
0.5M的硫酸,也就是0.5mol/L的硫酸.