a mixture of Caco3 and Baco3 is 42.8% Co3 by mass. find the mass percent of baCo3 in the mixture

题目

a mixture of Caco3 and Baco3 is 42.8% Co3 by mass. find the mass percent of baCo3 in the mixture
什么是is 42.8% Co3 by mass? 是说混合物有42.8%的重量是Co3么?

答案

在含有碳酸钙和碳酸钡的混合物中,碳酸根的质量占了总质量的42.8%.计算碳酸钡在混合物中的质量比率.
LZ在国外学习?