一、解题步骤及格式解题步骤一般分为以下几步:(1)解:写出解;(2)设:设出未知数(用x、y等字母表示),一般情况下,求什么,设什么;(3)方:写出与计算有关的完整的化学方程式;(4)求:根据化学方程式求出与计算有关的各物质的质量比,并写在相应的物质的化学式下面;(5)写:将已知量与未知 First, the problem-solving steps and the format problem-solving steps are generally divided into the following steps: (1) Solution: Write solutions; (2) Design: Set unknown numbers (represented by x, y, etc. letters). Under normal circumstances, what (3) Party: Write the complete chemical equation related to the calculation; (4) Find: According to the chemical equation, calculate the mass ratio of each substance related to the calculation, and write it below the chemical formula of the corresponding substance; (5) Write: Known quantity and unknown