juan01sebastian00
27.11.2019 •
Chemistry
How do i calculate the heat of reaction?
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Ответ:
1. Decreases by 4. (B)
2. The atomic number changes. (B)
3. 56/26 Fe. (C)
4. Potassium-40;t1/2=25 days. (B)
5. Takes place in the upper atmosphere. (A)