有关化学式计算的题型同学们都已熟悉了,由于篇幅所限,就不再赘述了.本文只谈近年来根据化学式计算或求化学式的新题型,勿庸置疑,读完此文,你的解题技巧一定会有所提高。1 根据化学式计算的新题型 例1 化合物X_2Y_3中含Y为50％,化合物YZ中含Y为25％.则化合物X_2Y_2Z_3中,Y的质量分数为( ). (A)14.29％ (B)28.57％ The questions about chemical formula calculation students are already familiar with, due to limited space, will not go into details. This article only talks about chemical formulas or chemical formulas in recent years. Undoubtedly, after reading this article, you The problem-solving skills will definitely improve. 1 According to the new formula for calculation of compound formula 1 in compound X_2Y_3 with Y of 50% and compound YZ with Y of 25%, then in compound X_2Y_2Z_3, the mass fraction of Y is (). (A) 14.29% (B) 28.57 %