To share with you a chemical handout "Calculation Using Chemical Equations", chemical equations are an important foundation for learning chemistry.
First, the steps and formats of calculation using chemical equations
1. Set the unknown amount;
2. Write out the relevant chemical equations
3. According to the chemical equation, the mass ratio of each substance is listed under the corresponding chemical formula
4. List the known conditions and the unknown quantities to be sought in the corresponding substance under the chemical formula of the corresponding substance:
5. Column proportional solution;
6. Write concise answers.
【Precautions】
1 The calculation process must be standardized, and the steps can be summarized as "one set, two writes, three columns, four solutions, and five answers".
2. When setting the unknown number X, you cannot bring units after X.
3 writes only the mass ratio of the substance associated with the known condition and the unknown quantity.
4 During the calculation process, the known quantity must be brought with the unit.
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